I rattlecanned my truck and it turned out good. But I've also had 2 years of auto body training. Just be sure to sand the clear coat with 600 grit sand paper and a DA sander (easiest), thoroughly clean the surface, prime it(make sure it cures before spraying the paint or it wont turn out right), lightly sand the primer with 1000 grit, clean the surface again, spray on the paint (do it in a garage if possable, wind will fuck up the job), after spraying on the paint let it cure and spray on at least 2-3 coats of clear for best results, let the clear sit over night, after letting the clear fully cure buff out the surface with buffing compound. if you do it right It will look decent. ooh and one more tip. grap a piece of sheet metal and practice a couple times before doing it to your car so you can get used to it