Very well done.
Great depictiopn of Yoko. I only give you a nine because of the face, honestly. The body proportions and shading are awesome: you have real talent.
The face looks too American drawn, if you ask me. That said, the face IS acceptable, and also well drawn.
I would suggest a facelift, and a little more definition on the stockings. The flames on the boots, too, look a little off. That might just be my imagination, though.
Good job! Kudos! Keep it up!