As first game jam it was good attempt. if you have just started making games in general, i believe you have done very good job in given timeframe.
however if you would polish this game, you would really feel the different and learn a lot. such as better hitboxes, smoother controls etc. these provide really good game juice to your game and additional personal skill gain and dopamine to achieve those on top of submitting a complete game on your first game jam.
Music was nice.