Some final polishing touches on this shot. At this point its getting into the little details and having hands/fingers settling into place, punching the shoulders up a bit more (a common note I hear at work), some adjustments to the mouth shapes. One suggestion from the mentor that really helped was to take out/down the eyedarts in the first bit of the shot - leaving his focus steady on the other person. Only when he realizes it's getting awkward does the eye start to nervously dart around.
And more expression one-offs as well.