I decided to take one of my clay concept sculptures through to Zbrush 4R5. I started modelling from a dynamesh sphere. Renderings were done in Zbrush and composited in Photoshop. I love Zbrush, still have so much to learn, but it's becoming more intuitive the more time I spend with it.
The model is still a work in progress. I softened her features quite a bit for the Zbrush iteration.