For a first game I think this was a fitting entry for SBIG! As someone who started out with it many years ago, I always love seeing a Scratch game, we usually get at least one each year!
The artwork and sound effects are perfectly SBIG, and I appreciate there being several of them to break up the monotony of the gameplay itself. That being said, the "ending" of getting all upgrades is reached before the game gets stale so the pacing and length is just about perfect. I always appreciate short but sweet games in a larger jam!
I hope you continue to make more beautifully weird games!