This was a fun little platformer! Played all the way until the very end, loved those little fireworks! One thing that would work better given the genre chosen for this game, would be if the jump was not so floaty, usually with platformers having a more snappy jump tends to feel better. It would be nice to also track how many coins are collected on screen - would make for a good way to show progress or even high scores.
This was a very good submission, very cute, lovely work putting all of this together and I hope you both keep making games! Makes me happy to see so many wonderful entries.
Keep it up!c: