Tips on painting my car, anything you know about sanding, priming and painting a car will help!?

If you have never been around vehicles being painted, if you have never been a part of paint prep or painting of vehicles.....go down to Sherwin Williams, get a can of their best latex, a short nap roller and a good brush. Use the roller on the big areas and the paint brush around the windows, the door trim, the rubber weatherstripping and the bumpers. Send pics....