After 3 coats of paint. Sticking to the 18" rule and having lots of horizontal and vertical lines when I'm finished, I checked the help line. One suggestion was to use a sponge to "blend" out the lines after it dried. I dipped my sponge into a paint tray and dapped over the lines and then worked it out by dapping into the other areas. I just spot fixed the wall and it doesn't look too bad. I definately would not buy Ralph Lauren brand again though. good luck!!