I think this is one of the best images, if not THE best image, in your portfolio. The exposure is perfect, the crop at the top and on the left is good. I'd crop just a tiny bit off the right, to get rid of the dark line along the edge. I love her smile and the way she's amused at something outside the image. The sky reflecting in her sunglasses is a nice touch, as are the catchlights in her eyes. You could burn the bright sign on the door as it attracts some unwanted attention. Overall, this is a beatiful, natural portrait conveying good feelings.