Writing for 1K output
1K is decision resolution, not print resolution. Prompts that fight the format produce mush; prompts that work with it produce clear, comparable variants.
- One subject, one scene. At 1K, a single clear product read beats a busy composition—save the ensemble shots for a higher tier.
- Name the light and the backdrop explicitly. “Soft side light on warm paper” survives downscaling; subtle ambient mood does not.
- Avoid asking for readable long text. Short labels survive; paragraphs of packaging copy will not.
- Put the variable you are testing in the prompt. If you are comparing backgrounds, keep everything else identical line to line.
Using reference images
A batch can carry 0–2 reference images, shared by every prompt in the batch. They anchor the product so your prompt only has to describe the change.
- With a reference, prompt the delta: “same bottle, now on a stone ledge with hard morning light”—do not re-describe the product.
- Use two references when the second carries different information (e.g. product + texture swatch), not two angles of the same thing.
- References must be PNG, JPEG, or static WebP, ≤10 MiB each, and are re-encoded server-side with metadata stripped.
Structuring a batch
A batch is one line per direction, up to twenty lines, each rendering 1 or 4 outputs. Treat the sheet as an experiment: vary one thing at a time.
- Group by variable: lines 1–5 test backdrops, 6–10 test lighting, 11–15 test angles. The fixed VD-NNN/MM slots keep groups together.
- Use 4 outputs per prompt for your two best directions to see variance; keep the rest at 1 to stay under the 80-slot cap.
- Write lines so they read standalone—each line is an independent task and may fail or succeed on its own.
Six copy-paste examples
Written for the VD DEMO products, but the structures transfer to any SKU. Paste one per line.
Same product as the reference image, placed on a warm terracotta paper backdrop, soft window light from the left, gentle shadow, centered composition.
Same product as the reference image, hard directional light from the right, deep shadow on matte stone surface, high contrast, editorial look.
A stainless steel water bottle on a wooden trail bench beside a backpack, morning forest light, shallow depth of field, photorealistic.
Top-down flat lay of a travel organizer pouch with passport, earphones, and charging cable arranged neatly on warm beige linen, even soft light.
A coffee can on a rustic table with scattered roasted beans and a folded linen cloth, warm autumn tones, cozy café atmosphere, soft side light.
Single skincare serum bottle centered on a seamless light gray background, soft even studio lighting, subtle reflection under the bottle, clean packshot.