How to Build an AI Style Guide to Stop Brand Drift

Quick answer: Write one page that fixes your light, lens, colour palette, model type, set and banned elements, turn it into a reusable prompt block, and attach 3–5 approved reference images. Everyone on the team starts from that block. Review new images against it before publishing.

Why brands drift

Each person writes prompts differently, and each tool has its own default look. After a few weeks the feed looks like five different brands.

The one-page guide

Section	Example
Light	Soft north window light, low contrast
Lens	85mm portrait, shallow depth of field
Colour	Warm neutrals, olive, cream; no neon
Model	Natural skin texture, minimal makeup
Set	Plaster walls, linen, daylight studio
Banned	Glossy plastic skin, lens flare, busy props

Turn it into a prompt block

"Soft north window light, 85mm lens, shallow depth of field, warm neutral palette with olive and cream, natural skin texture, plaster wall set. Avoid glossy skin, lens flare and clutter."

Paste this after the subject of every prompt.

Add references

Pick 3–5 approved images. Visual references hold the style better than words alone.

Review routine

Once a month, put the last 20 images in a grid. Remove any that break the guide and adjust the block.

Try it

Save your look and characters in the Creative Workspace so every shot starts from the same brand direction.