Drive the nail head slightly below the surface of the wood with a finishing nail punch and a hammer. A nail punch is a round metal tool whose tip narrows into a point. Place the tip of the punch on top of the nail head at a 90-degree angle and tap it with the hammer until it is just below the wood's surface.
Smear some wood filler into the depression over the nail head with your finger. Blend the wood filler into the area directly around the nail head and ensure it is even with the wood's surface. Allow the wood filler to dry according to the directions.
Sand the wood filler smooth with 200-grit sandpaper. Lightly sand the area with the nail head to make it smooth without removing too much of the wood filler.
Rub stain that matches the shade of the wood over the nail head with a soft cloth. Don't over-saturate the cloth with stain; just dampen it slightly. Rub the stain over the nail head and blend it into the area around it. Allow the stain to dry, according to the directions on the can, before resuming normal use of the furniture.