Nano Banana (Gemini Flash Image) in Google Flow is one of the best free tools for image generation. Let's break down how to get a quality result.
The basic loop
Type a prompt, choose a format, generate. Don't like it — change one detail and regenerate. Most good frames are 3–5 iterations, not a single shot.
Prompt anatomy
Describe by a checklist: subject, environment, action, light and style. The more precise the description, the closer the result is to your idea.
References
Attach a sample image to hit the right style. It's handy when style is hard to put into words and helps keep a consistent visual for a series.
Series in one style
Fix the «style core» in the prompt and change only the subject. That way ten images look like a single set, not a coincidence — important for a brand and portfolio.
