The other thing is adjusting the opacity (spelling) by a couple less % on the added bits, like the graphic on the bonnet. That way it looks a little more natural. The other thing is to maybe work on darkness levels. Again it just makes things a little more natural. The rear wheel and intercooler are a little 'in ya face'.. just need blending down a tone.

You seem to have what it takes tho mate, so good on ya.