Although Good, Not so good
The Idea is great and the paint brush is brilliant.
But there could be more interactive gameplay. Moving & Jumping is not just enough for me. Could also have backgrounds, real obstacles. Not just black & white. Of course I understand if you want to use this as your style, but for me it doesn't really amaze. It's so original and so used.
Another thing is that you could add a death animation when you die.
Something that it wont just *ding* go back to the start. It doesn't really bother me but it looks just dumb.
Better luck next time. I don't think this one really successed.