Like one of the guys said....CLEAN IT GOOOOOOD! Get bug remover for the bumper cover/headlights/mirrors and clean them....then soap that baby down and scrub her good. Like manwhore said....LIGHT COATS....dont go real heavy with it or it will look bad/run. Also just spray it one part at a time. Do the hood first...light coat....5-10 min flash or w/e it needs....another light coat....maybe another after? idk....depending on how light ya go. then move to the fender...do that...then door....ya know? One part at a time. Don't try to just do one side of the car at once. K, i'm done ranting
Good luck! Can't wait to see how it looks on an alero.