I am not being funny but i think you have got a little too close here. The picture has no context. Had you stepped back or included more in the frame you would have shown possibly something of what is actually going on. Something seems to wrong where the hair meets the background.

Maddie

Hi John,

Couple of things strike me, first is your exposure because you chose AV Mode and F11, you ended up with a very slow shutter speed which is bound to effect sharpness and then your lighting is very flat. There is nothing wrong with the histogram on your photo it's just that your lighting set up is all encompassing and as such you end up with a tonally flat image. I would also forget F11 and go for the classic f5.6 and nail the focus on the eyes.
I would suggest getting a little more creative with your lighting. Try using one light and experimenting with light and shadow - it's not necessary for us to see the subject in full, try angling the light to give tonal changes across the face.

Another point is your colour correction. I'm guessing the background was white or close to white, yours is blue, in fact the whole image has a slight blue tone to it. By opening a levels layer mask in PS and taking the white dropper and clicking on the background, you immediately end up with a better photo in terms of colour correction and it even lifts the punch.

Hope this is more helpful and I'll also post this into your gallery image.

Maddie