For a finishing touch, use the smudge tool with a very small soft brush at about 30% and stroke over each hair youve added. Pull the tip of each one of these hairs to a softer point. This will result in a softer more photographic look.The whiskers were added in the same way as the fur strands, with a one pixel brush at about 50% opacity but with a longer quick stroke.I added a black background to make it easier to see the finished fur.