Keep the model context, then adjust subject, style, lighting, camera angle, and output ratio before remixing.
Replace vague nouns with concrete subjects, locations, colors, materials, and mood words.
Run one strong version first, then iterate only the parts you want to change.
Prompt
Nano Banana Pro 3.0 Prompt: Cinematic black and white noir portrait. Subject: Man in fedora and trench coat. Lighting: sliced light from blinds, deep shadows. Atmosphere: grainy vintage. Technical specs: 4K resolution.