Here's the best advice I've ever gotten for doing things like wings where they need to be identical: do the second one first. Makes no sense until you're sitting at the torch... lol.
Btw the red butterfly is really beautiful - it has a wrinkly feel to it that probably came from struggling to get them the same size or whatnot, but you should consider that as a legit process because the outcome is very butterfly-ey.
http://mivvie.files.wordpress.com/20...ings.jpg?w=238
Also, with regard to the legs, you might consider a two stage process to creating them. Make the body and wings and leave six studs from which you can then draw out the legs from later on. Since the stud is a small tip the flame won't shatter it as long as you keep it off the body. Good luck!