Try not to compress it so much, there is a lot of artifacts and blurring around edges due to compression/quality settings of the skin. Are you using MSpaint or some other program?
If you are using MSpaint, you should try using something else, you really cannot edit the compression amount. If you don't want compression, just make a BMP image and post it here, someone could make a big finer quality JPG for you. If you are using something else, try and find the quality settings to get rid of those artifacts
Heres a .jpg from photoshop, and a screenie from cmx viewer.
I would move the playstation logo on the rear quarters up and back a bit, to keep it off the door handle and arch, also the playstation logo on the door seems to have a bit of white? around it where it was cut from the original image.
Looking good though
Maybe try using Paint.NET as an alternative to the normal Paint.
Ehm.. I have a new question. (but I dont want to start a new Thread)
I often play LFS against my freinds. We have the idea of having "Pace Car Phases". One of us would be the Pace Car driver. We would like to have a nice Pace Car skin.