I freaking love that car. It's so cute, and the colors are really nicely done. What doesn't make much sense to me though is the shading on the one facing forwards: I understand that the sides that are shaded are meant to be facing more away, but you may want to have it be just one singular line that differentiates the sides from the front. It looks odd, like those two sides are dipping in a little more than they should.

Still experimenting with colors, I see? x]