I was told you should never include camera direction unless it is absolutely necessary to get that part of the story across. Directors don't like being told what to do.
BTW, I was also told that you should try to be a little on the vague side in your character descriptions so you don't limit who they are able to cast in the role
too much, and miss out on really phenomenal talent. So unless your story is dependent on a character being 5'9-1/2", have blond hair, green eyes, and a cleft chin, don't be that specific.
