I agree with the above comments.
Just a few other small things:
1) The spoiler needs to be further right >> (just a little bit). If you line up the struts with the back of the car, you'll notice that they're too far left
2) Blur around the rear lights - I know you've tried to turn the lights on, but you've kind of added a dull yellow blur. They should be much much brighter, with lots of white to get the effect of being turned on.
Other than that it's actually a really good chop, with lots of good stuff
Well done
I wish you luck in the competition