A portrait prompt shown with its result — copy it, swap the subject, run your own.
Prompt
Ultra-realistic lifestyle fashion portrait of a young woman sitting casually on a white rectangular cube against a soft dusty-pink studio background. She has long wavy brown hair, wearing a minimal beige linen outfit, natural makeup, soft diffused lighting, high detail, 8k resolution.
The output stays consistent because the prompt nails down a material / texture call, so re-running it — or handing it to a teammate — lands in the same place instead of drifting. Keep those clauses and rewrite the subject to make it your own.