Hey! I recently finally got around to finish the beauty render of this model (done in Cycles) which I present you here. I used Photoshop for compositing, with Cycles saving out all the different passes (diffuse, glossy, subsurface scattering, etc.) which were later re-combined for greater flexibility for corrections and adjustments.
You can also take a closer look in 3D using Sketchfab:
I also have a WIP screenshot from a realtime viewer (3Do) for your viewing pleasure:
All of these along with a AO pass can also be found at my artstation: https://www.artstation.com/artwork/963151
Thanks for your interest, if you have any questions feel free to ask them in the comments! :)