I am building an 8' x 12' french window with an arched top for a production of Peter Pan. I am an intermediate carpenter at best, any suggestions on the best way to build something strong but good looking from both sides when it opens? I was going to cut the top arch out of 3/4 plywood and then attach it to a frame made from 1x3, but how can I easily join the wood, while creating a strong frame that is beautiful to the eye from both sides. Also, any tips on how to create muntins and mullions easily. I need simple, strong, and good looking, oh and cheap would be nice.