Shots of children are often cute but not profound, but this is both. I love that there is nothing level or stable in the frame -- no reference point except the joy of the expression. And how did manage to make the face the only sharp thing in the picure? Great skill or great luck, but who cares, it is an exuberant image.
Thanks for good words. I love this picture so much. (She is my daughter) This is made very simply: We was in the restaurant, and she ran around and laughed. I saw, and a tried keep the focus on her face. It's all. There isn't PS effect.