Yep, I agree with the above comments - a very nice looking chop
I'm particularly impressed with the transformation to the silver colour - that's worked really well
All of the parts seem to fit well, it's just that there are a few small mistakes to watch out for:
1) Bonnet vents position - compare the distance from the 'crease' at each side of the bonnet - you will they are too far right
2) A few jagged / sharp edges, mainly around the vents at the front - learn to use the pen tool for selections, and set a feather to 0.2px
Other than that, good work

Well done