Airbrush spray

I had a friend who just moved recently to thier newly built house. She and her husband are the ones who make most of the inside finishing touches including the painting works of walls and ceilings. I admire her a lot because she never did this kind of thing before but now she's good at it. She told me that they're using airbrush spray in painting doors, walls and ceilings because it's a lot more easier to use. I will probably give it a try!