Awesome presentation and idea, very impressive you were able to do so much in such a short time.
I still have some annoying nit picks if you allow:
-the fact that the level resets each time you fail get's quite annoying after a while
-The game is quite trial and error based, especially with regulating the strength of the fan, you basically need to guess how far it will push your plain and that tikes a lot of mindless trying and failing
(please keep in mind I only wrote such annoying stuff because everything else is so good)