Use a level to help you draw a straight line for the top row of the shoe rack. The length of the line depends on the space constraints for the shoe rack's location and the number of shoes you own. Draw another line 12 inches below the first and another 12 inches below the second. If you prefer fewer or more rows of molding, adjust the number of lines accordingly.
Buy enough picture molding so that you can cut a continuous length for each row. Ask the lumberyard or home improvement center where you buy the molding to cut it for you. Most retailers will do this for free or for a nominal fee. Sand the cut edges of the molding smooth with 80- then 200-grit sandpaper.
Drill a pilot hole with a 1/4-inch drill bit 6 inches from one end of each piece of molding then every 6 inches across. Drill additional pilot holes 2 inches from the ends of each piece of molding. Place the pilot holes about midway up the width of the molding in an inconspicuous location.
Paint the molding as desired, either to match or contrast with the wall. Spray paint works well or use semi-gloss paint and a paintbrush. Apply a thin coat and allow it to dry before applying a second thin coat. Finish with a clear varnish to make the shoe rack easy to clean.
Ask an assistant to hold the bottom of the shoe rack flush with the top line you drew on the wall. The lip of the picture molding should face up so that you can hook the heel of your shoes over it. Hammer a finishing nail through each pilot hole. Repeat with the other two pieces of molding. To use the shoe rack, place the heel of each shoe inside the lip of the picture molding. The top of the shoe faces outward into the room, and the toe rests against the wall under the molding.