Not bad!
Haha, great you used my music.
For the game, first of, get some original character! Stickmen are old and boring. And naming your game "The Stickman's Adventure" doesn't sound interesting.
Anyway, the gameplay was OK, though there's still alot to improve. I fell of the little platforms alot when jumping on them.
I think there also should be more enemies. The enemies looked quite nice though!
I've played trough the whole game and thought it was a little short too.
Anyway, this is a good start. Hope my review was useful to you!