This cap for an octagon Witches Hat roof makes a nice statement for this application. Fabricated from foam board, fiberglass cloth and resin and bondo and painted with automotive urethane enamels.
Topped off with this wonderful antique copper weather vane, this made a stunning addition to this front porch. 
This porch just makes the house. It was an important addition to the original structure. 
A total change of curb appeal for this 100 year old house. 