Its a really nice game, I only have a few suggestions...
- It would be really nice to show how many points you have in the shop, because I had no Idea what I could afford. You should do that, its pretty easy.
- I would polish the art of the pipes and maybe the background, It looks sorta dull.
- Maybe add a score scene when you die, because when I died, I had no idea what I scored at that time.
Its a really good game, especially for a first real game. Good job and Good luck.