7 - Nice portrait. Nice toning/colors. Criticism; difficult, maybe a touch more 'sharpness' in her eyes, not sure. Technically, while no 'expert', I would like to have seen an even stricter application of the rule(s) here, not only for the Challenge but I think it would still make a good shot with more space to the left, and her hair not so 'cut off'. The frame, not sure.
I like the border, background, composition and smile. More light on your model's face would have really made this shot for me. I wouldn't change anything else though it's a great shot.