Not a bad subject here, it is a great human interest image. Did you give him any $$$?

As far as this image goes the subject is good but the lighting is tough and you ended up with a fairly contrasty overall look. You could crop this in from the sides a bit (up to about the edges of the benches). Cropping in tighter and converting to B&W might give this an interesting look.

If you have the chance to do this again try shooting with the camera level with the subjects head and filling the frame with what you are trying to shoot.