Such an awesome idea using a cheap mirror from Walmart or Target. Attach to a piece of plywood (paint it first), then add either crown molding or any other type of wooden accents. - Click image to find more Home Decor Pinterest pins
Make your baseboard more dramatic...add small pieces of trim to the top of existing baseboard, add a few inches and add another piece of molding. Paint the wall and trim white. This also works for crown molding too!