How to add images to app listing?

Having tried out the new UI, I noticed that some app listings now come with screenshots and a title graphic, one example being Froody.

How can I add screenshots for my own app? (As one thread mentioned some publishing tools aimed at Google Play, note that the one app I currently have in F-Droid is not on Google Play.)

You can find more information in the docs.

Thanks! I’m adding the images to my app’s repo, we’ll see what happens with the next release.