Senior portraits

A few weeks back I took my neices senior pics. I shot about 110 and out of them there were only a few that were exceptional.

One thing I need to look into is the focal length, and the how far I'm standing from my subject when I shoot. So here is what I will be reading  Focal Length .

Focal Length 112, cropped, cloned in scene above head.

I'm not quite sure what I was framing in this shot...I thought the bench might add something to the photo but I was dead wrong. Benches are for a two person shot in my eyes. Wouldn't you agree? It looks like something is missing.

Focal length 75mm Post crop