To be using a mule test car turning it into a chop is very impressive.
Just a few things to look out for:
-The left side fog-lights are alot more blue-er then the right.
-The windows are too smooth, you need to refine the lines on the A-pillar
(Using this image as reference:
http://srv2.betterparts.org/images/mini-cooper-06.jpg)

-The right fog light reflection on the bumper is a bit too strong
-The watermark on the background is flipped, Im not sure if that was intentional
-The numberplate are rather blue-ish where as the rest of the image is rather warm, Run a photo filter ontop of the image to blend the whole image together (Image> adjustment> photo filter)
Saying those, I still think you did a spectacular job, nice one Sandmann.
