How did this project turn out Commander?
I'm getting ready to Build a Togruta headpiece of my own and have a very similar strategy in mind for the Montrals and Lekku.
Dragon skin would work great for your Top Layers and they have their Psycho Paint for Platinum Silicone, tough to paint already...
Silibond is a great prosthetic Adhesive exclusive to Silicone.
Silicone is a pretty tough prosthetic and there's many reasons why we only use them once due to the fact that after silicone has "cured" it may stick to everything but doesn't truly bond to anything else, like those sticky hands you...
What are you using to release the Epoxy from the Silicone mold with? Any Epoxy should peel right out of a platinum silicone no problem.
EpoxAcast690 is one of my favorites, get a trial size, about $30. Crystal clear and meant for these applications, make sure you have a scale for weighing out...