So you need to start off by taping across the inside edges from the cabinets and the drawers, certainly, assuming that you do not need the paint to bleed into the inside, and you'll want to tape within the sealing edges or walls exactly where the cupboards meet up with. http://average-labor-cost-to-pai04713.theobloggers.com/2602969/pre-painted-cabinet-doors-fundamentals-explained