I can get that XD I actually wanted Behemoths head molded by now ... I still find myself with only 1 mandible molded, and the rest I'm still adjusting, and detailing going slow without motivation since I just want to move on to the next part.
Sculpey is inexpensive and it comes in silver. You can use what you've done as a perfect base upon which to apply this skin of polymer plastic clay. The skin can be sculpted to refine certain details and smooth the edges.