I agree with all of what Snake said, except that I would first spray the body with matte black, then mist over that with silver, then spray the green on... if it were mine. The reason being that the black will fill in the panel lines, and if you don’t spray too much silver on, the darkness will be retained in the panel line for when you spray the green on, which will give a more natural effect without as much buildup needed with the green paint. However you choose to do it, I’m sure you will figure out how to get the results you’re looking for... just take your time and think it through?