Arrow keys to switch backdrops. If the After isn't working, hit G for "Go away, bad coding." If you simply hate my dysfunctional "After", just know that the pictures labeled "Before" are for Before, and it should be pretty easy to guess which ones are After.
I did some of this in my Duet Star- Camera project (https://scratch.mit.edu/projects/144834870), and it was so fun that I devoted a project to some of this. You can use whatever you like, with/without credit... that is, if you even want this stuff. What's your favorite? :D Mine's Candyland.
