I hope this is helpful. I have never posted a tutorial before and wasn't even sure what category to put this in. Its a large file, sorry about that... In case you don't know what wonderflex is, I have a link for you ^3^ [link]
Wonderflex is a sheet of plastic that can be cut and heated in order to mold it into any shape you want. It is a great base for many different projects. I have had the huge sheet for 2 years and am just finishing up using it with this project. I'll need to buy some more and I'm thinking of getting some friendly plastic to go along with it. That will make most of the clay parts unnecessary.
This Sephiroth cosplay is for
and made by me.