Not a bad chop at all dude
The ideas are good, and the composition and atmosphere look great too
As for the brushing, it's a good attempt, but I feel several areas could be improved:
->The fact that it has so little variation from light and dark (except for the bright highlights) make it look a lot more glossy than I think it should be
->Try and make the white highlights spread and disperse more over the matte paint
->The door and parts around the rear of the car are a different colour, and look to be quite grainy and low in quality
->The reflections and lighting on the body seem to contradict each other, one looks like outdoor lighting, the other indoor
Having said all this there is a lot of good on the chop, but you don't need me to tell you this, you know that all ready
What I can do is help show you where to improve
But yeh, keep it up dude