Use the selected existing in-app generated image as the source.
Change only its rendering treatment to [replace with the requested visible medium and surface treatment].
Preserve each subject's identity, facial structure, body proportions, hair, colors, and distinctive markings.
Retain the source pose, camera, crop, clothing coverage and fit, background, and lighting unless separately requested.
Keep hidden areas hidden. Do not add a new participant, prop, outfit, or action.
Apply the rendering change to the existing forms rather than importing another subject's physique.
Retain the current visible form and any intentionally partial mixture. A new transformation requires its own explicit change; do not introduce it as a style revision.