Letters Before Lunch, made with GPT Image 2.5 Sunburst
Example made with GPT Image 2.5 Sunburst

Text to imageAnime

GPT Image 2.5 Sunburst anime promptLetters Before Lunch

The exact text-to-image prompt behind this picture, made with GPT Image 2.5 Sunburst.

Prompt

Square 1:1 frame. An adult postal worker with freckles, a plum cardigan and a cream collared shirt sorts plain envelopes into a curved wooden rack. A mint desk fan lifts the corner of an empty paper wrapper beside a lunch tin. Cozy cel animation with subtle watercolor grain, bright window light from the left, apricot walls and cobalt shadows, small satisfying rhythms of work, no logos, no text.

Prompts are kept in their original English to help reproduce the example. Copy one as it is, or adapt it for your project.

Opens GPT Image 2.5 Sunburst with this prompt and the settings below filled in.

135 tested GPT Image prompts →

Settings

Mode
Text to image
Aspect ratio
1:1
Quality
high
Price
From 2 credits

The exact price shows before you generate.

Make your own version

  1. For a different mood, rewrite only the light: apricot walls and cobalt shadows.
  2. Cozy cel animation with subtle watercolor grain sets the whole feel of the shot. Swap it for another camera style to change the vibe.
  3. The prompt ends with no text. Leave that in, or the model may add random lettering.

Style prompt guide

Style traits to keep

A peaceful postal clerk sorting mail inside a warm alcove captures the calm atmosphere of classic hand-drawn feature animation. GPT Image 2.5 Sunburst renders this scene with painterly warmth by balancing clean cel outlines against soft paper textures. The mix of apricot interior tones and cool cobalt shadows gives the everyday sorting task a nostalgic, quiet rhythm without leaning into harsh digital sharpness.

The visual appeal relies on traditional theatrical animation techniques that balance flat line art with rich, textured background painting.

Texture
The subtle watercolor grain breaks up flat digital planes, giving walls and furniture the porous, hand-painted texture of traditional animation backgrounds.
Palette
Pairing warm apricot highlights with saturated cobalt shadows creates expressive temperature contrast instead of muddy, desaturated greys.
Light
Bright directional light from the left casts long, distinct shapes across the desk, grounding every envelope and prop in physical space.
Line
Cel animation linework provides thin, deliberate outlines for the character and moving props, keeping the human subject clear against the soft background.

What defines this look

  1. subject and settingSquare 1:1 frame. An adult postal worker with freckles, a plum cardigan and a cream collared shirt sorts plain envelopes into a curved wooden rack.

    This establishes the focal character, wardrobe colors, and workplace activity. Removing it leaves the generator without a clear narrative anchor, causing it to generate an empty postal office or a generic room.

  2. narrative environmental detailA mint desk fan lifts the corner of an empty paper wrapper beside a lunch tin.

    This adds tactile realism and subtle implied motion to the still image. Omitting this phrase creates a sterile, stiff desk surface lacking lived-in everyday storytelling.

  3. art style mediumCozy cel animation with subtle watercolor grain,

    This dictates the traditional animation aesthetic, combining crisp hand-inked character edges with painterly background texture. Changing this to digital illustration results in a slick, modern vector look.

  4. palette and lightingbright window light from the left, apricot walls and cobalt shadows,

    This anchors the signature warm-and-cool color harmony and directional exposure. Without these specific hues, the engine defaults to standard fluorescent office lighting and muted beige walls.

  5. mood and negative constraintsmall satisfying rhythms of work, no logos, no text.

    This guides the emotional tone while preventing the model from generating mangled faux handwriting or distracting postmarks across the envelopes.

Same style, new subjects

Greenhouse Nap

Applies the warm animation palette and grain to a quiet domestic animal still life.

Prompt

Square 1:1 frame. An orange tabby cat sleeps curled upon a wooden workbench beside terracotta flowerpots and pruning shears. A ceramic saucer holds pooled water. Cozy cel animation with subtle watercolor grain, bright window light from the left, apricot walls and cobalt shadows, small satisfying rhythms of rest, no logos, no text.

Coastal Courier

Transfers the cel animation style and split warm-cool tones to an outdoor street scene.

Prompt

Square 1:1 frame. An adult bicycle courier with rolled sleeves leans over handlebars to inspect a canvas map on a quiet cobblestone street corner. Cozy cel animation with subtle watercolor grain, bright window light from the left, apricot walls and cobalt shadows, small satisfying rhythms of travel, no logos, no text.

Morning Sourdough

Translates the nostalgic painted animation aesthetic into a comforting food still life.

Prompt

Square 1:1 frame. Thick slices of crusty sourdough bread, an open ceramic butter crock, and a steaming porcelain mug rest on a scrubbed pine table. Cozy cel animation with subtle watercolor grain, bright window light from the left, apricot walls and cobalt shadows, small satisfying rhythms of cooking, no logos, no text.

Model and settings

Keep the aspect ratio set to 1:1 to preserve the intimate, storybook framing of the postal sorting desk. Set quality to high so GPT Image 2.5 Sunburst cleanly resolves the subtle watercolor grain without blurring it into smooth digital airbrushing. Run in standard text-to-image mode without input pictures so the model composes the cel line art freely from scratch. If you later adapt this into a cinematic background layout, switch the ratio to 16:9 while keeping quality high.

  • Nano Banana 2.1Choose Nano Banana 2.1 when you want punchy hand-drawn line clarity and sharp 4K output that keeps painted paper grain crisp.
  • Seedream 5.0 ProChoose Seedream 5.0 Pro if you plan to provide reference character sheets to maintain uniform character features across sequential anime scenes.

When the style drifts

Shadows turn murky brown or grey instead of vibrant blue.
Strengthen the color contrast phrase by replacing cobalt shadows with rich indigo shadows and ensure bright window light from the left remains intact.
The artwork loses its hand-drawn feel and looks like glossy 3D rendering.
Remove any lighting adjectives like realistic or cinematic, and emphasize traditional 2D cel animation with painted gouache backgrounds.
The postal envelopes sprout garbled, unreadable text and messy postal marks.
Move no text, no letters, blank paper directly after the mention of plain envelopes in the prompt text.

Questions about this style prompt

How do I prevent the model from adding messy handwriting to the mail?

Explicitly state plain envelopes and include no text at the end of the prompt. Specifying that paper surfaces are totally blank stops the generator from trying to render decorative stamps or illegible cursive.

Why does the image look like modern digital art instead of vintage animation?

This usually happens when modern lighting descriptors creep in. Keep terms like cel animation and subtle watercolor grain while avoiding words like 3D, photorealistic, or cinematic.

Can I swap the color palette without ruining the painterly look?

Yes, replace apricot walls and cobalt shadows with another clear warm-and-cool pairing, such as buttercup yellow walls and deep violet shadows, keeping the directional window light descriptor in place.