Unfortunately there is contrashading about the head. This is why it is important to divorce ones mind from what is in the view finder, vs what one WANTS to see. One aspect of photography that is difficult to master, is what is literal and what is percieved. The minds eye sees an ideal image of correct light, composition hues, tones and clarity. It's what WE want to see. It is not what the camera sees. The camera is literal in it's captures. In my mind I see an image that is without shadows about the head. This comes from the anticipation of getting the shot ( in other words not being critical ). This is the exact time when a deep breath needs to be taken and then become critical of what IS in the view finder, NOT what I PERCIEVED. This is what is meant by divorceing the mind from the eye. Learn to SEE WHAT IS THERE.