This would be something I would sculpt, using Blender's sculpting tools, since I don't have Zbrush. I would set up the scene first, then export it for sculpting refinement. I am not that skilled with Poser's morph brush, but if I were I might consider using that.

Poser 11 Pro, Windows 10

Auxiliary Apps: Blender 2.79, Vue Complete 2016, Genetica 4 Pro, Gliftex 11 Pro, CorelDraw Suite X6, Comic Life 2, Project Dogwaffle Howler 8, Stitch Witch