Baa!
It was cute, nice concept, but something about the physics or controls or something felt a bit off. Maybe it's that I can slip off the corners of things... (maybe I'm just not used to platformers built with general-purpose physics engines?). Also it seems like sometimes the mushrooms bounce me higher but I'm not sure why/how to make it happen intentionally (I tried timing the jump button, I tried holding the jump button).
(It's also entirely possible that some of the physics-feeling-off came from me having a decade-old laptop with an integrated GPU...)
Aside from that... cute!