Bounced light is the real key to realism. Bounced light is what eliminates the telltale shodows around her nose and chin. Subsurface scattering or, light that has penetrated the skin is another key element. That script addresses it. Eyereflects can be worked out in the matroom. Paint them(reflects) off your textures first in paintprog(cornea, iris and pupil). Good luck. It's not easy.