Hold the painting up to the wall in the position that you wish to hang it.
Lower the painting 1 inch and use a pencil to create four marks directly above the painting. The marks should be one-third from each side of the painting.
Hammer a nail into each mark, leaving about 1/2 inch of nail protruding from the wall. A 2-inch nail should be sufficient to hang all average-sized stretched canvases that have 1/2-inch thick frames.
Hang the painting by resting the frame over the nails.