http://www.public.asu.edu/~roblewis/...makestring.htm
The "Finishing the Serving" section is a bit hard to figure out from the diagrams but once you play with it a bit I think you'll get it.
This method also works but I find that it's hard to get as much tension on the finishing wraps as the first method:
http://www.cs.usu.edu/~watson/artemi...tringhowto.htm