Design taken from pottery.
Use a round shade with a round base.
This is the conventional shape. If you can not get a pattern from the former covering, a new one can be easily laid out as follows:
PROCEDURE
1. Lay out and cut shade. 2. Draw outline with waterproof drawing ink and color with transparent water color. 3. Glue ends together (be sure shade fits the ring). 4. Punch and lace. 5. Apply clear plastic spray.
Remember:
Diameter × pi (3.1416) gives you the circumference. Allow ½ inch for gluing.
Punch holes about ¼ inch from edge and lace with plastic or leather lace.