You sir might be a god among men!!
Ive been racking my brain trying to figure out the way to set up the "arrow through the head" type screw. Then you came along and posted this. A tear came to my eye at the beauty of this amazingly helpful post.
The only question i have is if you could tell me about how long it took to build?
Other than that question this might be the best costume tutorial ive ever seen.