This seems a lot more rushed than your other work like your mini. The carbon imo has been done terribly wrong but not to worry. This can be fixed. I'll take the original and do a carbon effect and leave you the carbon piece of donor here to use next. I'll tell you exactly how I done it. Here is what your carbon should look like:
Here is the donor you should use for the carbon from now on:
Uploaded with
ImageShack.us
You basically select around the bonnet. You then make a new layer and make the bonnet become black as possible. Then add the carbon layer over the bonnet and set it to "Colour Dodge". Job done.
As for your vents, you really have rushed this and it should be in quick chop area tbh. Also the image chosen is really bad quality. Try and stick to using images of
www.netcarshow.com and
www.dieselstation.com
Like I say to most people, pay attention to detail and take your time. Try new things and anything you're stuck on ask one of us here and we'll help. Best way for you to improve I would find would be to post a WIP in the WIP Section and we can help you along the way and give you tips and what not. Good luck.

Post edited July 09, 2010 at 08:49:45 AM by BCS