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

Using this character, create a YouTube thumbnail-style image with the title 'What's Amazing About Nano Banana Pro! 10 Features You Can Use Right Now'. Have the character look at the Nano Banana icon with a surprised expression. Set the image dimensions to YouTube thumbnail size 1280×720 pixels.