Step 6: Yoshi Head (Final shaping)
I could have used "foam" tools which are nothing more than heated wire or rods. Which would have been good for cutting large chunks or putting smaller holes in it (which I did not really have a need for). Also I thought melting it could possible add a little weight, instead of taking it away.
I also carved a place for his head to go. I did this by using the hole saw to cut the basic hole then using the steel wool to refine the shapes. This gave it an almost helmet like fit.
BTW, this is a really messy process.