Congrats on your first game! It has core mechanics and they work, the beginnings of a metroidvania style "oh with this power I bet I could go get that item I saw earlier" style of gameplay.
The player movement felt a little jarring, particularly with the camera attached rigidly to that quick start & stop style of jumping, but since you only had a few days for this (versus the usual '2 weekends' for GWJ) it makes sense. The last section, the moving platforms wanted to slide out from under me, and some of the jumps weren't visible as to where you'd jump next.
The powers were really fun and the lil' main character was adorbs!