Wrap the semicircular chicken wire around the frame, bending and squeezing the wire to fit snugly on the frame to form the top. Cut away excess wire and use needle-nose pliers to wrap cut ends around the chicken wire. Wrap the length of chicken wire loosely around the pot, forming a cylinder for the cloche bottom. Use needle-nose pliers to wrap any cut ends of the wire around the adjoining chicken wire. Slide the mesh cylinder off the pot. Attach the cloche bottom (mesh cylinder) to the cloche top. Use adjustable pliers to twist the top edge of the cylinder around the bottom edge of the lampshade frame, wrapping any cut ends and pinching the edges to secure. Wiggle and wedge a glass doorknob or other decorative accent into an opening at the cloche top. Use needle-nose pliers to pinch the wire together to hold the knob in place. Snug the bottom edge of the cloche into the garden soil. Use two or three garden staples to hold the cloche firmly in place. This step is crucial to prevent critters from crawling under the cloche.