I think youre gonna literally rofl when I tell you this. The arrow are actually made from a 99 cent flagpole, illustration board, hotglue (for raised designs), and craft foam.
OH! In that case! I cut out the shape of the bow on Illustration board and epoxy glued it like crazy on tightly on the PVC pipe (which shall be your inside base too!). Then I plaster wrapped it in about 5 to 4 layers and then I used some plaster of paris to coat it smoothly (cause Plaster wrap alone isnt Sandable). Sanded it down and then I spray painted it Gold. The silver parts are made from craft foam coated in Elmers glue and hot glued it on.