I just refuse to believe that is your first chop, either way you've photoshopped before (albeit not cars) or you've spent a lot of time in it, anyhow, just congratulate you for a great job on every respect, I just don't see the perspective fitting the bg, but I guess that given that you've proven you handle the basics pretty well it's a matter of time & practice.
Congrats again!
Adding power makes you faster on the straights. Subtracting weight makes you faster everywhere.
Colin Chapman.