Comments from a viewer only..
(1) It lacks emotion. The high-key would be nice if she can express joy. Or a slight hint of a smile that can also be seen in the eye. Since its high-key, I would use a little flash to add sparkle in the eyes. Maybe try another shot with and without flash, and bring a jokebook or something to add emotion in it.
(2) I love the color and her bandana (? not sure what its called) is lovely... but since she is looking out and cannot see eyes, only her lips show emotion... maybe a more red lipstick to match the bandana? And a bid of sadness would add a tenseness on the lips... or just show more eyes would also be nicer (imho).
(3) I don't know how to comment. I like the fall of hair... lovely hair.