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 = Turn everything into Gundam?! Today's creation is toy themed hahaha, Joker Gundam is so cool! Gundam ZH25O Creative Series Gemini 2.5 Flash Image Creation