I beg you, if you are a developer of an open source app or program - add screenshots of your app to the README file. When looking for the perfect app, I had to install dozens of them just to see what the user interface looked like and whether it suits me. This will allow users to decide if the app they choose will suit them… Please, don’t think about it, just do it…
The idea that something like that exists sounded funny to me at first, but that’s actually pretty useful. It would be even cooler to have a website that lists good and bad practices on a dummy project