you will have a bit of difficulty removing the application tape from the graphic, most vinyl doesn't stick to paint that well. I mean, it sticks, kind of, but the adhesion isn't like a piece of metal, it's more or less a static cling. You have to watch out for curling. avoid small text, go slow, and make sure you peal the application tape on itself when you remove it. . I'm not too sure about the paint it's going on, that could cause huge issues too. .There are special materials just for wall graphics, but it's mostly made for printing, it's expensive and still not 100% perfect. Where do you buy your supplies from, they may be able to send you in the right direction.