Use any wreath form you have- Styrofoam probably works best but I happened to have an Oasis floral foam one so I started with that. Buy a spool of burlap (or any other autumn themed ribbon) at your local craft store
Pin one end of the ribbon to the wreath form to hold it in place. Start wrapping the ribbon around the wreath, making sure to overlap the pin completely and then overlap on itself by at least half at each turn.
Keep wrapping until the wreath is completely covered. Use a hot glue gun to glue the end in place (at the back of the wreath).
Embellish as you wish (I used yellow craspedia and wheat) securing with hot glue. Hide the glue with a pretty ribbon bow)