Some quick feedback from a fellow game jammer:
Glow (what you did well)
1. You actually finished your first project!!!
2. The art is looking great!
3. The game loop is tight.
Grow (what you could do better)
1. There is no juice or sound effects. I want it to feel good that I hit the tooth with the cannon, but it doesn't really. If you don't know what juice is, I'd recommend this GDC talk:
2. Music is crucial in an arcade style game like this, so next time, you could add that as well.Overall, this is amazing for 2 weeks and phenomenal for a first project. Keep it up!
You finished your first project!!! WOOHOO!!!!!