Reference-heavy editing changes how you work. Instead of describing a person, a product and a style in words, you hand the model the actual material - and the job becomes keeping the result faithful while you change one thing at a time. That is a different discipline from prompting, and it has its own failure modes.
What references are actually for
Three distinct jobs, and mixing them up causes most drift:
- Identity - the face, the product, the logo that must not change.
- Style - lighting, palette, texture, era.
- Composition - the framing or pose you want to start from.
Give the model a few strong examples per job rather than twenty mediocre ones. A blurred product shot in the reference set is worse than no product shot at all, because the model averages what it is given.
Edit the output, not the prompt
Once a round produces something close, feed the output into the next round with one instruction: move the hand, change the background, fix the label. Re-prompting from scratch each time re-rolls the identity and you will chase consistency forever. Multi-round editing is what makes a set of images look like one shoot.
Control drift deliberately
Distant rounds drift. Two habits keep it bounded:
- Keep the identity reference in every round, even when the instruction has nothing to do with the subject.
- After three or four rounds, compare against the first result. If the lighting has crept or the product has softened, restart from round one with a better instruction rather than patching round five.
Resolution last
Work at a comfortable resolution while you are still deciding, then finish at the highest one the model supports. Upscaling a draft you are about to change is wasted; exporting a 4K frame from a workflow that is still moving is a way to ship an artifact. Zoom to 100% on the edges you touched - labels, hair, thin geometry - before the final export.
Keep the round history
Name files by round and instruction: product-r2-bg-swap. When a client asks for "the version before the background change", the answer should be a filename, not an afternoon of reconstruction.
Tooling
This is what a workspace with a large reference budget and multi-round editing is for - for example Hy Image 3.5, which takes up to twenty reference images, keeps editing rounds together and outputs up to 4K. The model matters less than the loop: few strong references, one change per round, compare before you continue.
The rule
Separate identity, style and composition references; edit the previous output; compare every few rounds; upscale last. Consistency is a process, not a setting.
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