So the first thing I tried to emboss with was a plastic stencil. This worked with the sandwich they suggested (A-B-Stencil-paper-matt-B) and did a good emboss with paper.
So I attempted to use this in the same sandwich, but the texture plate made it just too thick. I removed one B plate and replace the final B with a C, but unfortunately it was now not thick enough. I was gutted that I wouldn't be able to use these, so I went back to my improvised embossing matt and created this new sandwich.
(A-mouse matt-texture plate-paper-embossing matt-B)