Hi, I'm painting a frame. I have already applied two back-to-back style coats of rustoleum on top of the primer, and I'm thinking I would like another couple of coats of color. What do I do next? Can I just sand the surface of the first two coats and apply more color? Also, as long as I'm on the subject, how long would you recommend I wait before clear coating, and do I have to sand between the color and clear coat. I've been reading a lot of Dr. D's posts and searching the forum, but there is just too much to look through in order to find the answer to my questions.