Light Painted Mercedes SL63S

This is my first attempt to do light painting and photoshop compositing. It's a fun technique. Feedback is welcome. I'd like to learn more about this and also compositing techniques in general.

Here's one of the original photos, I was bored and went out in the arctic New York weather last night to find something to shoot, and came across this Mercedes near the BQE in Brooklyn. I used a 50mm lens and a simple LED video light. Good lord it was cold out there!

Light Painted Mercedes SL63S