wow......just wow....theres no other word for this pic other than AWSUME!!! wow i mean wow i just cant stop staring this pic is so super cool! again your art just has so much depth and so many layers to it its amazing!! i love the way you have the shadowed disine with the teath marks mooving out from the mouth talke about a stroke of genuis!! the eyes are amazing i love the efect you gave with having one sunken and one poping out! not to mentoin the ear talk about wow! theyre awsume your anatemy is amazing!!
I made it in ZBrush with defaut brushes and defaut material and after I used a filter in photoshop, thats give the "black lines". It's really easy to make, I think the Zbrush file will not help that much :S. If you want that i explain, you can add me in messenger *firstname.lastname@example.org* and I explain with more details
I have no Zbrush tips for ya, but I really like your design. It's almost minimalist but has enough features in there to add interest. It's a little flat on the highlight/shading side, but that fits into the pic's vibe.