Hi there!
Huge respect for the first jam and the first game! I always have lots of respect for solo developers! I enjoyed the game, liked the music and the art. I certainly feels like you made an effort to create all assets your self, which is always great and appreciated! It fits the theme well!
In case you are looking for potential improvements:
It was a bit weird that the cursor touching the spaceship destroys it. You might want to change it? It was a bit too easy to destroy your own ship and that could cause frustration. You might want to create a small tutorial instead of introducing the mechanics to the player in the actual game. It was a bit hard to navigate and read the instructions, and it might be even better if people can process the information on controls first before they dive into the game.
Good stuff, well done!