Really cool game that I eventually got the hang of!
There were a few things that were a little unwieldy during my playthrough. The camera felt a little jank, making me make a ton of blind jumps and stuff. The character controller here also moved incredibly quickly that I got caught in a lot of platforms and was unable to make the precise jumps I wanted to. Perhaps if the speed wasn't constant, rather a ramp up it may feel a lot better, but I understand if you didn't get a lot of playtesting time. Trust me, we didn't either!
Readability is something you should consider as well. The sheer detail of the snail was so overwhelming, it was sometime hard for me to see where the platforms actually were! Discerning the dark green and red bins were okay, but there a moment where I thought the back bin was a part of the art and not an actual gameplay element! I think it would help conversing over a cohesive art style that balances all the art and detail evenly, making the important elements important, and the not so important a little more into the background!
But other than that, congrats on getting into your first game jam! It's not easy, but a game is better than no game! We're all better designers in the end, good job!