If a skinner is asked to do a skin he wants precise information about every detail at best.
So at least think about which colour/colours your car should have, think about a kind of style that it should have (more comic like, more like a real race car with many sponsors?).
PS: I don't know if they ever leave the Off topic forum but there are many many idiots around that take jokes way too far, so if anyone asks you, just reply: "Yes, I've got a computer in my kitchen indeed." ...