use close up and long shots to show the intense war that's going on.
use two shots and over the shoulder shots to show that Watson and the therapist are talking.
he meets his old friend and his old friend hers that he's alone and suggests that he gets a flat with Sherlock.
Watson meets Sherlock for the first time but Sherlock knows every thing about him already by his body language and the way he looks. use intense close ups to the parts of Watson Sherlock's analysing. the also buy a flat together.
Watson and Sherlock arrive at there new apartment which belongs to some Sherlock helped out years ago.
they get to the new apartment and its more like an office place for Sherlock and has a very old atmosphere. use close up two person shots.