I'm just doing my first clear over base paint job and to make things a little harder for myself, it's metallic. I have sprayed one panel and it has turned out well but it seems a fair bit lighter than the existing paintwork. I understand you can alter the shade of a colour by using different spraying techniques ie using more or less thinners and altering the air pressure etc. Are there any other methods, and if so, which one has the greatest effect?