Cool! :D
But why did you leave out the legs? :s

Very nice, although, I'm not sure if it's a style choice but the waist is slightly too thin for my taste.

The lighting on the hair really stands out in this, and the shading on the wrinkles is great! I also like how she's got a Tim Burton's "Corpse Bride" feel about her with how frail she seems.

Great work on the expression. It seems more vacant than a living being's would be, but still shows enough emotion without destroying the zombie look. A perfect balance.

Very good anime zombie gril.