They look very realistic on the thumbnails, but the full size doesn't look as good. They're unclean. Like on the first 205 pic, there's a bunch of dots on the bumper. It looks like bleh. To cure that, you should get out the lasso tool, put in a feather of 2, and select that area, and blur it, so it's no longer visible. But if you overdo it, it looks out-of-place. You should do that with every unclean spot, until it looks all good. Then do a light sharpen or unsharp mask, and then it looks real good.
