Wow! The eyes just grab me and pull me right into this photo. Then I start to wander. Two things keep dragging my eyes away from the face; the lighting in the lower right on the skin makes that area stand out, and secondly ...well, I'm human.
Technically the lighting and exposure are right on. Looking at the eyes it seems that they may be a tad soft and that the sharpest focal plane fell on the front of the headpiece. Not bad soft, just a tad. Compositionally I wonder how this would have done if it was cropped to take some off the right (into the hair a little), and some taken off the bottom (up across the chest, just below the hair). Just some thoughts.
I am surprised that this scored as it did. I would have figured this for a 6 - 6.25. Hard to figure sometimes.