Looks ok, but it would be best to post some pictures from the cmx viewer so we can see it in more detail. It seems a bit jaggy but that could also be the screeny itself.
It seems the Scavier logo on the front is cut off though.
I'll explain. CMX Viewer is a little program the devs made to make life easier for skinners. You can get it here: http://www.liveforspeed.net/?page=addons
It's a program that enables you to load the LFS cars and put on your skin. This way you don't have to start up LFS every time you want to check the changes you made to your skin
The skin looks pretty good, not bad at all. But the compression kills it a bit.
Some more help: if you have photoshop or any other program that can handle .psd files, download these: http://www.lfs-gear.com/kitz.html
Those will help your skinning a lot as well.
I'm a bit busy with some other stuff, and I would have to remake the skin completely. Besides, skinning is fun so you should try to improve it yourself It's not a bad skin at all, much better than most first skins. I'm sure your next skin will be even better