How to use positive and negative prompts in Stable Diffusion

Negative Prompts

Put words in [square brackets] to de-emphasize them in the output. Use this to remove unwanted items, or shift the focus of the subject slightly.

/render Seamonster [ocean]

You can use any number of square brackets to further push down a prompt, but it only works to a certain point.

/render Seamonster [[[[[ocean]]]]]

With it, you can definitely achieve results with negative prompts that are impossible otherwise.

Use case demonstration:

Positive Prompts

Inversely, you can make a concept more pronounced with positive prompts using parenthesis. Let’s compare the results:

/render a sandal made of bread

Not quite what we were going for, so let’s add more emphasis:

/render a (sandal) made of (bread)

That’s more like it!