While I would ascribe the "not terribly sharp" to the fact that this is a scanned print, I agree with mike on the centred-ness of your girl-friend. Also I am not so very keen on her underwear showing, her slightly bowed back and way she holds her arms.
But you apparently used the fill flash with great success! And something tells me that her eyes ARE, indeed, very sharp in the print!
And yes!
SHE IS VERY PRETTY!!!