Abstract: A mask and air pressure control system for use in coating deposition is disclosed. A method is provided for controlling liquid coating droplets during deposition onto a substrate by directing atomized liquid coating droplets in a flow path toward the substrate, and applying a vacuum or pressurized air from an air pressure control system to at least a portion of the atomized liquid coating droplets in the flow path. The air pressure control mask comprises an air pressure control fixture structured and arranged for connection to a source of vacuum or pressurized air, and a nozzle opening structured and arranged to at least partially surround a flow path of the liquid coating droplets and to selectively allow at least a portion of the liquid coating droplets to pass through the air pressure control mask, wherein the vacuum or pressurized air prevents at least a portion of oversprayed liquid coating droplets from being deposited on the substrate outside an intended edge of the coating.