When I approach strangers and ask to photograph them, I try to get authentic expressions - not a "say cheese" smile. But some women think that they look prettier smiling, and that's what they are going to do. Period. End of discussion.
Bob http://www.deinfaces.com/
She has an engaging smile, and this is a flattering shot in my opinion.
IF (that's IF) I was forced to make a crit, it would be that I'd like both eyes as sharp as her right eye. That's just nit-picking, however, as far as my perceptions go.
Thank you, T-bone. I usually shoot at ~f2-2.8 Unfortunately, when someone turns their head quickly getting the eyes in different planes, I don't make the adjustment.