Try importing a Poser head and shoulders into Rhino and then using that as a mannequin to overlay onto. Most Poser hair involves layered planes shaped over the head, with trans and tex maps to add most detail. I use Animation Master. It`s slow but has two major advantages: It works in splines, and allows all viewports to be rotated to get the best views. If Rhino allows this then your laughing. My hardest task is learning to think in 3D. If Rhino import/exports OBJ files then you can use Poser to tweak the shape with its scale and magnets options.