It's absolutely stunning. There's a surreal sort of video game feel to this one. The background, the headpiece, the clothes- everything is perfect! You can clearly see where the light source is. The texture in this artwork is dead on. There is no apparent area where the detail fails or is given up.
This one is really much more realistic than the one you did three years ago. From the hair, to the small portion of her face you can see. Shading really makes a piece, and here your shading is flawless. I literally thought this was a photograph. You've made a HUGE improvement. I see nothing wrong here.