Take succulent cuttings a day or two prior to adding to your succulent wreath. Cut stem sections 1 to 2 inches long, removing lower leaves. Allow cuttings to sit overnight on a tray to let the cut ends callus (form a thin layer of cells).
On a flat surface, lay out cuttings in the arrangement you want on your wreath. Aim for density. To create a spot for planting each stem, make a hole in the moss using a pointed object, such as a pair of scissors, a pencil, or a screwdriver.
Place a succulent cutting into each hole. It's not necessary to dip cuttings in rooting hormone -- succulents root easily when the soil is kept moist.
Insert pins, such as crafts clips or floral pins (available from a florist), to hold cuttings in place. This is especially important for succulent wreaths that will hang. Cuttings will root along their stems, but until they do, the pins will keep them secure.