Style and content do not actually separate
The premise is that a picture splits into what is depicted and how it is depicted. In practice the boundary leaks, and that leak explains nearly every disappointing result.
Some things are unambiguous. Palette, contrast curve, grain, brush texture, and light quality are style. Subject identity, layout, and pose are content. But plenty of looks are defined by things that reshape content: a woodcut style has chunky shapes, a caricature style changes proportions, a low-poly style rebuilds geometry. Ask any of those to preserve a face exactly and you are asking for two incompatible outcomes.
Three ways to apply a look
- Prompt only. Name the medium, era, materials, and light. Cheap and good for broad genres, unreliable for a specific look you have in hand, because you are relying on words to reach the same place as an image.
- Style reference image. The model conditions on a reference alongside your input, with a weight to trade off. This is the standard approach for matching a look you can show but not describe.
- Trained style. A LoRA or fine-tune learns one look from a set of examples. Expensive to prepare, and worth it exactly when you need the same look across dozens of images, since it is the only option with real consistency.
The dial order that works
When output is wrong, adjust in this order rather than changing everything at once:
- Denoise strength. How much of the original is kept. This is the coarse control and the most common cause of a destroyed subject.
- Style weight. How hard the reference pushes. Raise until the look reads, then stop.
- Structure control. Add depth conditioning to hold space, or edge conditioning to hold outlines, when the first two cannot both be satisfied.
- Prompt. Last, and used to name what the reference does not carry, such as lighting direction or a color you want emphasized.
Choosing and cropping the reference
A good style reference shows the technique at the scale you care about. Crop to drapery, foliage, a wall, or sky rather than a full portrait, so the model reads texture and palette instead of a subject to reuse. Match roughly the same level of detail as your target: a reference photographed close up will push large brush marks into a wide shot where they read as smears.
Two references averaged together usually produce something weaker than either alone, so treat stacking as a last resort. If a look refuses to transfer at any weight, the honest read is that it lives in the shapes rather than the surface, and it needs a trained style or a different plan.