Graphics to improve, I mean there are single ones that are quite good, but they just don't work together. It looks like you downloaded some assets from different sources and glued them into one game.
Game has no selling point. If you look forward to getting thousands of downloads or even selling a game, plz don't expect much from this one. Look how good was Super Meat Boy, that should be your goal for next projects. Burry it, start another project and never stop learning. good luck and dont feel ofended - it is an honest opinion, which you should always be looking for :)