Vision: Very nice, definately caught my attnetion. Good choices to incorperate her mane in the background. I like the speckled effect. If i would change anything I would darken the eyes a little more instead of being purple on the outside edges. Maybe add a little more light swirls on the mane as well.
Originality: Very nice! Im really impressed with the background, I cant do the swirly color streatches and such so i love it.
Technique: Very nice
Impact: I suppose if this is the focal point it would be the head where the light/magic is pertruding.