Look at racers tutorial, give focal points like you would an image, you don't just take a picture, you compose it.http://www.nextgenhardsurface.com/index.php?pageid=racer445 This tutorial should give you a better Idea, I know you prolly are finished with this, but it's not done.
The texture looks really noisey now and really hard to read the form of the vehicle. In some senses this is good as its what camo is meant to do, however for showing off a nice vehicle this doesnt work. Your scratches are now better placed, though still a little random. Look at the parts people interact with, these should…