Zbrush Head Practice WIP

I took a sphere and started making a head out of it. No reference pictures for the model, but I did look at various images online for the texturing. I just started coming up with a native tribesman, and then it started looking like Michael Jordan so I ran with it a bit. I'm still working on the texturing and planning on baking the high res mesh on a lower res, optimized mesh, just for some Zbrush practice. Right now I'm about 50% done with the texturing.