I used the molts from a b. boehmei (both from the same T... she's only a year old and already she's passed the typical adult size... and she's molting again...)

On the right is my first attempt. So much went wrong. First when I was spraying her with fixative I accidentally grabbed my white spray paint instead, so she has a frosted look to her. Then the a few things got messed up during the pour, and I had to go back over her with epoxy to fix it.
The second one went a lot smoother and I frosted the back with sandpaper.