# Getting good results

URL: https://fulla.dppst.com/docs/generative-fill/tips/

> How to select and what to write in the prompt to get the best fills, and what to do when a result misses.

A few habits make the difference between a fill that shows and one that doesn't.

## Select generously

Leave room around what you add or remove.

To add an object, the model fits it to your selection: **give the selection the proportions of the finished object, shadow included**. With the wrong proportions, the object comes out cut at the edge of the selection, most often its shadow. In low, raking light the shadow is long: widen the selection on the side where it falls.

**Narrow selection, taller than wide.** It doesn't have the proportions of the mug and its shadow: the mug comes out small, and its shadow is cut off at the edge of the selection.

**Generous selection, room for the shadow.** The whole shadow falls on the table.

Same photo, same reference image and prompt: “Put the mug from the reference image on the table.” Nano Banana 2.1, 2K, $0.06 each. Sample photos generated for this demo.

## Ask for the light, the perspective and the depth of field

The model doesn't always guess them. Add them to your prompt: `put the mug from ref 1 on the table, match the light, the perspective and the depth of field`.

## Describe the change, not the photo

Say what should appear or change in the selection, not the style of the whole photo: Fulla already sends the photo around it.

## Use a reference for what was really there

A face, an object, a sign: give the model a photo of it. See [Reference images](https://fulla.dppst.com/docs/generative-fill/reference-images/).

## Generate again when a result misses

Models draw at random, and about one result in four can miss. Click **Generate** again, or ask for [variations](https://fulla.dppst.com/docs/generative-fill/variations/) and pick the best.