Excellent exposure on the dark end of the spectrum and the focus is good. The portrait is void of any highlight, other than the lightest part of her hair. A soft light to brighten her eyes and lighten them would help this image. Also, it appears to be a little overly sharpened adding texture to her face.
Perfect formal head shot. It makes me think of a shot one might find on a realtor's business card. I mean no disrespect at all, it is very formal and leaves me with the feeling that this lady is very trustworthy.
This is a very well composed well done shot. The lighting ads plenty of detail and doesn't detract from the subject. I think however the lighting might be just a bit flat. Maybe a slightly different angle would have fielded the more dramatic effect. But then again maybe that was not what you were going