Hey glad to see someone so young be interested in game developing! Keep at it, you got a solid base already and if you keep working on it you will definitely become a lot better. You made a fully playable game in 2 days, that is something you can and definitely should be proud of! It is not easy to come up with an idea, code it, create the graphics for it and then put everything together in that short time span. Good job on it and I hope to see more coming from you in the future! :D
Also if you do need help with anything programming wise, feel free to text me. This was my first game jam as well but I have made lots of hobby games for myself in the past and I do work as a programmer so I got lot's of experience with that lol