The following instructions will fit a mirror measuring 27 by 29 inches, but you can adjust the measurements as needed for your mirror. ONE Position mirror in the center of the plywood sheet, and use construction-grade adhesive or wood glue to attach lattice pieces to the edges of the plywood, making sure the mirror fits snugly. TWO Line up molding pieces so that they extend just slightly beyond lip of the lattice, over the glass. Place a rosette block in each corner, lining up the ends of the molding with the rosettes. Glue the molding to the lattice pieces, taking care not to glue directly to the glass.
Place towels over the molding to protect the wood, then weight the mirror with plywood.
Allow to set about 24 hours. Use only one screw in each vertical molding piece, a third of the way from the bottom. Measure a third of the way down the side of the frame, and attach a ring on each vertical molding piece, screwing them into place. Cut a length of picture wire long enough to run between the rings, with the peak of the wire 3 inches from the top of the frame. Twist an end of the wire into place on each ring.