How to write a character sheet description for Nano Banana Pro

Where the description lives

When SceneMixer reads your script it writes an appearance for every character it finds. Open the character card in step 2 and you will see it under the sheet. That text is what the image tier draws from, and it is yours to edit: sharpen the face, add the anchor, fix the outfit, then regenerate that one sheet.

The framing is not your job. Every character sheet on the site is the same kind of picture — one full-length figure on white, lit flat enough to show the bones — because every shot of the series will be matched to it. Why sheets are plain explains the reason.

The order: face, anchor, build, outfit

Face first matters most on Nano Banana Pro precisely because it reads so much: if the coat is described in eight clauses and the face in one, the sheet frames for the coat. Describe a face so it is not a generic face goes deeper on faces.

Example 1: a realistic lead

A woman in her late thirties with a long face, a straight heavy brow and deep-set grey eyes; a thin high-bridged nose and a downturned mouth; weathered olive skin with fine lines at the eyes; dark brown hair cut bluntly at the jaw, grey at the left temple. A pale scar runs from the right corner of her mouth toward the ear. Tall and lean, shoulders slightly forward. A navy wool peacoat over a cream turtleneck, dark straight trousers, black lace-up boots.

Why it works: every word can be drawn. The scar is the anchor, the grey at one temple is a second small identifier, the posture gives the figure an attitude without asking for a pose, and the outfit is one outfit with four named pieces — the kind of detail Pro keeps.

Example 2: an anime lead

A boy of about sixteen with a round face, large upturned amber eyes and thick dark eyebrows; messy black hair with one white streak over the left eye; a small bandage across the bridge of his nose. Short and wiry, stands with his weight on one leg. A school uniform: dark green blazer with a gold crest on the left breast, loosened red tie, grey trousers, scuffed white trainers.

The style (anime, painterly, 3D) is set once for the project in step 1, so the description does not say anime style. It describes the person; the project style decides how he is drawn. The white streak and the nose bandage are anchors that survive a stylised look.

Example 3: a period costume

A man in his fifties with a square jaw, heavy-lidded brown eyes and a broad nose; close-cropped grey beard; a burn scar on the back of the left hand. Broad and heavy-set, upright posture. A Tang-dynasty official's robe: deep crimson round-collared gown, a black gauze cap with two stiff wings, a jade-plaque belt at the waist, black boots.

Period costume is where Pro is worth its price: a gown, a cap with a specific shape, a belt with a specific material. Name each piece and what it is made of; the costume will be drawn piece by piece rather than as a generic “ancient robe”.

What to leave out

• Lighting and mood. Dramatic rim light, moody, neon: whatever light is on the sheet is carried into every shot. Write the light per shot in the storyboard.
• Effect words. Beautiful, handsome, striking, masterpiece, 8K, cinematic describe nothing drawable. No magic words explains why they backfire.
• Results instead of causes. A hint of red at the nostrils is painted as a red nose. Write the cause: a cold belongs in the storyboard, not on the sheet. See describe the cause, not the result.
• A second outfit. Usually overalls, a white gown at the wedding gives a gown with straps. One outfit per sheet; the gown is a state. See one outfit per character sheet.
• Real people and known characters. A name or an iconic outfit trips the IP check on every tier.

Second looks: states, not a longer description

For the wedding gown, the hospital gown, the bandaged arm: add a state on the character card, describe only what is different, and generate it from the main sheet. The face stays the main sheet’s face. Then pick that state for the scenes where it applies. Costume changes and scene states walks through it.

Fixing a sheet that came out wrong

• Generic face: the face part is too short. Add bones and an anchor; regenerate.
• Costume dominates, face small: the outfit is described at length. Cut the outfit to its main pieces.
• Two outfits blended: move the second to a state.
• Odd light or colour cast: a mood word slipped in. Delete it.
• Blocked by the text check: a word reads as violent, explicit or a real name. Rephrase in neutral visual terms; a blocked sheet is not charged.

To change one thing about a sheet you already like, edit only that thing — write the change, not the whole picture.

Price

Each Nano Banana Pro sheet costs 33 credits, after 15 free sheets per account on any tier. Regenerating a sheet is a new charge, so a good description the first time is also the cheap one.

FAQ

Updated October 23, 2026