Quick answer: In step 1, open the Visual Style card and press + Custom Style at the bottom of the picker: a text box appears under the card, and the description you type replaces the preset for the whole project. It is a member feature — on a free account the button carries a small PRO tag and opens the membership dialog instead. Your words are used exactly as written, into every character sheet, scene image, prop image and video, and writing them costs nothing. The catch is timing: once you continue past step 1 the style is locked, so decide before you press Next.
Sample: “The Veil at Dawn” — Realistic HD, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes
Open step 1, click the Visual Style card, and look at the bottom row of the picker: that is where + Custom Style lives.
Where it is, step by step
Open the project’s step 1, Set Up Your Project. Visual Style is the first of the three style cards (Scene Style and Costume Style sit next to it).
Click the card. The picker opens with the grid of preset samples and one line of hint text: the style sets the rendering medium and texture of the whole piece, and the character sheets, scenes and video all inherit it.
Along the bottom of the picker is the row of special choices. On the Visual Style card that is + Custom Style. (Scene Style and Costume Style also have a None there.)
Press it. The picker closes and a text box appears under the card, marked Enter custom style description.... Type your description there.
The card now reads Custom Style instead of a preset name, with your sentence under it. If you change your mind, open the picker again and click a preset — that clears the custom text and goes back to the preset.
Nothing is committed until you press Next: before that you can switch between presets and your own text as often as you like, and edit the text in place.
What your text replaces
It is one or the other. The project’s style is either a preset or your text — the box does not add to a preset. If you like a preset but want one thing different, describe the whole look in your own words.
Used as written. Your sentence is passed on exactly as typed: nothing translates it, rewrites it, or expands it. What you name is what the generators get.
Length. The box shows no counter; the project keeps up to 200 characters and quietly cuts anything past the 200th. Two or three sentences cover everything a style needs.
Empty box. If you continue with the box empty (spaces only), the preset you had selected before is saved — by default that is Realistic HD. So an empty box is never a broken project, just a preset project.
No charge. Writing the description costs nothing. Your images and videos cost exactly what they cost under any preset.
The AI suggestion never fills this box. When you let the AI pick a style, it chooses among the presets; wording your own is yours to do.
What it shapes
Every character sheet, scene image and prop image in step 2 — the first thing you will see carrying your look.
State variants and AI redraws you generate later: anything produced for the project afterwards keeps the same style.
Every video segment of the project: each video prompt carries it.
The script read, too: it rides along when your script is read, so the descriptions written for your cast and sets keep to the same look.
What it never changes: what happens in a shot. Framing, camera, blocking and dialogue come from the storyboard; the style only decides how the frame is drawn.
How to write a description that holds up
The test is one question: could you point at each phrase in a finished frame? A medium, a surface, the way lines and shadows behave, a palette — all pointable. Praise, moods and orders are not. Two or three sentences is plenty. Six examples that pass the test:
Film:35mm film look: visible fine grain, a soft glow around lights, slightly faded warm shadows, muted greens.
Watercolor:Hand-painted watercolor: visible paper grain, pigment pooling along the edges, thin broken outlines, a pale earth palette with one warm accent.
Cel animation:Flat cel shading: hard-edged color fields, bold uniform outlines, no gradients, a high-saturation primary palette.
Stop-motion clay:Clay stop-motion: every surface keeps fingerprints and tool marks, rounded corners, matte toy colors, the shallow focus of a tabletop miniature.
Picture-book painting:Gouache picture-book painting: matte paint texture, visible brush shapes, a short palette of indigo, ochre and cream, soft paper tooth.
Ink:Black ink and grey wash: confident brush lines, paper white kept as large empty areas, no color, soft grain in the greys.
Keep it about how, not what: the people, the places and the events live in your script. The description of the look is the one place where you talk about painting, not about the story.
Three ways descriptions go wrong
Praise instead of description.“Beautiful, cinematic, 8K, masterpiece quality” names nothing visible; these words are noise to the render at best. Write the cause instead: “soft window light, muted pastel palette, visible paper texture.”
Camera and framing orders.“Extreme close-ups throughout, the heroine always fills the frame” — every shot already gets its own framing from the storyboard, and a project-wide order fights each of them. A style describes how a frame is painted, not how it is shot.
Names, and the wrong layer. “In the style of” a studio, franchise or artist: those names can get your generations rejected by the video moderation, so describe the look in plain traits instead. And scene content like “rainy neon street at night” is not a rendering style — it belongs to the scene row or the script.
One trap is specific to this box: your text also goes into the scene and prop images, which are supposed to show no people at all. Person words in the style (“a lone swordsman”, “a pretty girl”) can pull figures into those empty sets. Keep the description to medium, material and light.
Locked once you continue — and who can use it
Under the three style cards sits the notice, and it means what it says: the style cannot be changed once you continue, because it shapes every character sheet, scene and video; to switch styles, start over with a new script. Custom text is under the same lock — there is no edit entry after step 1, so your last chance to change a word is before you press Next.
On membership: custom style is one of the member features. On a free account the + Custom Style button carries a small PRO tag and picking it opens the membership dialog instead of the box; the requirement is also enforced when the project is saved, not just on the button.
The same box on the other two rows
Scene Style and Costume Style each have their own + Custom Style, with the same member rule, the same length limit and the same lock at continue. They then work differently once the project runs: they are folded into the descriptions at the script read rather than pasted in front of every image, which is explained in Scene Style and Costume Style Apply at Parse Time, Not Later. Their example placeholders show the flavor: an art direction like “old industrial plant, steel frames and rusted sheet metal, cold green palette”, or a costume system like “Miao silver regalia, pleated skirts and horned crowns, indigo batik”.
If the result looks wrong
What you see
Where it comes from
What to do
The images look like a standard preset instead of your text
Either the box was left empty when you continued (the previous preset is saved), or a preset was clicked after typing (clicking a preset clears the custom text)
Check the card before continuing — it reads Custom Style with your sentence when the text is in play. After continuing, a new project is the way to change it
Videos come back blocked by moderation
A studio, franchise or artist name in the description
People appear in scene images that should be empty rooms and streets
Person words in the style text
Describe medium, materials and light; leave people to the script and the cast
Every shot is framed strangely — all close, or the subject crowding the frame
Framing or camera instructions in the style text
Take them out: framing is decided per shot in the storyboard, not by the style
The look is close to the text but oddly generic
Praise words and moods took the room the concrete traits needed
Trade adjectives for visible things: grain, brush marks, palette, light
FAQ
Who can use + Custom Style?
It is a member feature. On a free account the button carries a small PRO tag and picking it opens the membership dialog instead of the text box, and the requirement is enforced when the project is saved, not only on the button.
Does writing a custom style cost credits?
No. The description itself is free; your images and videos cost exactly what they cost under any preset.
Can I extend a preset instead of replacing it?
No. The project's style is either a preset or your text — the box replaces the preset completely. If you like a preset but want one thing different, describe the whole look in your own words.
Can I change the style after step 1?
No. It locks when you continue, because it shapes every character sheet, scene and video. To change it, start a new project with a new script.
How long can the description be?
Two or three sentences. The project keeps up to 200 characters and quietly cuts anything past the 200th, so keep it short and concrete.
What language should I write it in?
Any — the text is used exactly as written and nothing translates it. What matters is that the words name visible things: a medium, materials, lines and shadows, a palette.
What happens if I leave the box empty?
The preset you had selected before is saved — by default Realistic HD. An empty box is not an error, just a preset project.
Can the AI write the style text for me?
No. When you let the AI pick a style, it chooses among the presets; custom text is yours to write.
Do Scene Style and Costume Style have the same box?
Yes — each has its own + Custom Style, with the same member rule, the same length limit and the same lock at continue. How those two take effect once the project runs is covered in the scene and costume style guide.
Write the look once, for everything
Open step 1, open the Visual Style card, and put your look into words before you continue.