i have recently fixed that problem. and due to not having a proper Paint program at the moment i was forced to use Microsoft powerpoint :P but i think it is a very good skin to say it was done on powerpoint.
Something a bit more serious. 2004 BTCC Vauxhall Astra not 100% real as there so many paint variations. been working on it on and off for about a week. Enjoy.
I have some critism though. On zhe vauxhall skin, the "2004 btcc champions" ist too much, imho; it kinda fades in with the dark red basecolor. I think it wouldn't hurt if it's gone xD
What hurts is the vauxhall on the front fender; it's screwd up by the wheelarches. With a bit less rotation and slightly more to the rear, it should fit. Chances are you might need to align a pieces of it front the hood-layer, but i think it would look much better.