Congrats on finishing your first game and releasing it. You should be proud of that. And, having played it, you made a fun, addicting little game. Awesome work. Loved the sound fx and music and how that combined with the overall style.
As far as learnings and so forth, to reflect on that. Someone commented on my game, to paraphase, 'this is like a month's worth of work' (which I took as a huge complement), and while I don't think it's quite that extreme, I think the point to take from it is, each game jam, you learn a little more, you remember what worked and what didn't, and then come next jam, you're a little bit better, a little bit faster. You have a clearer plan to start things. You know when to cut your losses and cut things that aren't working. And the next jam gets even better.
So keep working on those skills, keep pushing yourself and keep participating in jams. Awesome work.