Use the left and right arrow keys to switch backdrops. Remix with the number of things you have done out of the total number listed in the bottom-right corner.
I got this idea form @Pickle-Production's project "How Pickle Are You?" https://scratch.mit.edu/projects/66525502/ For how to fill this out see remixes of her project, including mine: https://scratch.mit.edu/projects/66956396/ I'll be adding more later. Credit for my logo goes to @Geniuz from the studio Logos Inc.