Im taking a likeness course over at https://artheroes.co/
I'm about 90% there with the sculpt at this point I think. Just minor tweaks for that last 10% now once I get him in Marmoset for Look Dev.
These images are not renders, just zbrush viewport screen grabs. It didn't seem worth putting in any effort to make renders now since its still very much a work in progress. Next up I'm going to work on eye leashes, stubble and eyebrows, then setup for Marmoset. Anyway, here he is now.
Reference: