Does the finish not look the way you wanted it? You DON'T sand the final coat, and buffing shouldn't be necessary either. Perhaps you used a matte or satin finish and you really wanted a semi gloss. If that is the case you can sand (lightly) the top coat and place one more coat of semi gloss. You can buff the floor, but I wouldn't wax it as this creates a continual maintenance nightmare. If this isnt what you were looking for, please let us know.