Cut pieces of twigs with clippers and piece together on the pattern. Using small picture frame brads, nail each twig to the board. Use screw-in rings on the back to hang. Since the studs in your ceiling will support the weight of the rack plus anything you hang on it, gauge the size of your rack to correspond with the distance between the studs.
Drill holes all the way through both pieces of wood at the corners.
Tighten on the underside with a nut and washer. Cut off any excess bolt with a hacksaw if neccessary. Attach chain to eye bolts. Hold the rack up by the chains, and mark ceiling. Insert hooked lag screws into ceiling on marks.