That was pretty fun! The core graphics look nice, although I would have liked to see some variation with the obstacles in the environment to break it up a little bit. I would also look into adding some extra challenges such as increasing game speed as you go or moving enemies for more challenges as well. I like the little dive transition for the character. It adds some charm to it.
Here's my jam game: https://coreydwillis.itch.io/kinda-float