Lets see. I really love the effects at the sides of the car but at some parts they see a bit too bright and the problem I have with those is that onthing of the lighting you added there is really going over to wario, the actual render. It looks like the signature has actual two parts, just the lighting and then wario. Becaus of that the car looks really a little too dark at the front as well. The colors you used are pretty nice but I would lower a little bit the saturation at the background and blur it a little away so that you get even some more depth. Otherwise the background is pretty sexy. You could actually add some border to that signature, I guess it would look good. I am just not convinced about the effect at the downer left corner. It somehow seems not fitting there because the other effects are going away from the side of the car to the back and that one is kidna coming from the car, so that it seems that it is going in the opposite direction which is not pretty okay for the flow. And do me another favor, change that font, it is really too much.
