What is a prompt and how to write one

A prompt is a text description of what you want to get. The model doesn't read minds — it draws exactly what you describe.

Try it on: Nano Banana 2 · Nano Banana 2 Lite · Nano Banana

The formula

Subject + action + setting + style + light.

Bad: beautiful girl

Good: portrait of a girl in a red coat, autumn park, soft sunset light, film photography, bokeh

1 — the prompt field: this is where you type. Enter sends, Shift+Enter adds a line.

6 — the run button: the price in credits is visible before you press it.

Tips

• Be specific: "golden retriever" beats "dog".
• Name the style: photorealism, anime, watercolor, 3D render.
• Add light and mood: "soft morning light", "neon glow", "dramatic shadows".
• Don't overload: 1–2 main subjects per frame. Need more? Run several generations.

Common mistakes

1. Too short. "Cat" gives a random cat in a random style.
2. Contradictions. "Night, bright sunshine" confuses the model.
3. Too many subjects. Every extra object lowers the quality of each one.