Press the flag. To play once press space. To loop press L.
I got the inspiration of doing this project from: @/Fluffy_Kittenz/ And I got the waterfall pic from @/Fluffy_Kittenz/ as well from this project: https://scratch.mit.edu/projects/305055504/ press space to get to the finished waterfall pic on @/Fluffy_Kittenz/ project.