Haha, thanks :D !! Hmm, can't quite remember, it was a lot of testing and tweaking, all of it inside Zbrush + BPR From what I remember, I used the Zbrush Material "Flat Sketch" and tweaked in the material's modifier panel the "Cavity Transition". Then almost basic BPR (I touched up a bit the BPR Shadow in the Render Panel,…