Make trim. For trim, use baroque mold and 2 oz. white fondant to mold trim. Attach with damp brush to cover middle seam of cake.
For trees, tint 4 oz. fondant green. Roll out 3/16 in. thick, use flat-sided tree cutter and cut out 14 trees. Attach to cake with damp brush. Use tip 3 and light green icing to pipe tree trunks. Use tip 6 to pipe top three rows of bead branches; tip 10 to pipe bottom two rows of branches.
Make hanger, shape 1 1/2 oz. white fondant into a disc 1 in. x 1 1/2 in. Attach to top of ornament with damp brush. Use a knife and make a small opening at the top 1/4 in. wide and 1/4 in. deep. Insert hook into hole.