Low quality previews
Close up of the head with shaders
Three words: It is overloaded.
There are too many unneeded detailes.
Legs and thighs are too simethric.
Back of the head need detailes.
Hands are too simple. Fingers are shown as few glowing lines.
Torso is too simple.
Paradox - few simple dark and light lines are perceived, as real object.