I have some small birdhouse ornaments I turned and I sprayed them with rattle can lacquer but got a little excited and now have a couple of spots where the lacquer has sagged or run. There are about 4 coats on already so the birdhouses are shinny and the lacquer is thick. How do I get rid of the sag? Do I sand it out or just spray more coats over it? Im not very experienced when it comes to finishes.....Thanks. Jack