Yeah like Speedtouch said, only complaints are the overexposed background and the-not-quite-real-looking number plate.
Maybe you should try limiting yourself to only the most basic of exposure and colour fixing, so we can see your skill in its undiluted glory (cheesy, I know...). Tbh, I really don't like it when people go over the top with PS, particularly when doing proper pictures cos then it means someone who's merely a good photographer can then baselessly claim he's a great one. I stick to the notion that if some minor detail happens to be in your picture or something else creeped into the edge because you pointed the camera a few deg off, then tough, because those are things you should know to look out for and avoid if you're a properly good photographer. Photoshop is basically cheating. Not to say that you're a bad photographer (quite the contrary in fact) but it's just my opinion as another photographer... Please don't take the above comments to heart ;)