2. Lighten UpEven a great bathroom can feel drab and depressing when the lighting isn't right. Start with the least expensive lighting fix. Trim thick shrubbery covering your windows from outside or replace thick curtains with some that let in light while retaining privacy. Designer tips: Add a few mirrors or bright, large pictures to reflect existing light around the room. A room-length mirror can make an instant and impressive change. Designer Laura Pollard recommends covering the entire wall length all the way up to the ceiling. "For a traditional or transitional look, leave a gap to glue trim around," she says. "For a contemporary or modern look, go with no trim."For those willing to make a few minor structural changes, do what you can to take advantage of natural light. Evans suggests replacing a solid door with one with etched glass, while Bright says adding a solar tube can be an easy and affordable skylight alternative.