Playing as a behind-the-scenes worker of a platforming level is a really cool and novel idea. I always appreciate novel concepts for game jam projects.
Placing large amounts of coins in specific positions one-by-one got pretty tedious for me, unfortunately. It wasn't helped by how relatively large the level is; there's a lot of ground to cover and cross-reference with the map.
I'm not quite sure how placing enemies worked. Buying enemies didn't seem to do anything. I couldn't tell if I was missing something or they were bugged in some way.
I don't think the game's visuals make the best use of the Shapely diversifier. There's no shading, sure, but I wouldn't say the graphics consist of "simple shapes". Not a huge deal, though.