Custom figures made out of the Wide Arm Fab 5 figure need tips

Those are exactly the look I was thinking of...BUT...I never thought of making those changes with that figure. There are a lot of good options in those pix. Very creative stuff there!

Anybody know if heat is used to do that (after separating one leg from the base)?

I think I have to risk melting a player or two and see if I can make a few like that.