Yeh
Sorry to say but it sucks, i know it was just a test and its good to do these.
What needs improvement is definitly the art. A rolling ball with a smiley that's not really appeling to most people. Also when you hold the "UP" button you just fly away if it supposed to be a jump you should really make it a jump and not a flying mode. And the levels need improvement but i think you saw that yourself.
Well good luck with future stuff.