The first are right like you guessed them, including the uneasy one, the neck rubbing was supposed to be a nervous gesture, but it's surprisingly hard to draw a hand there. The one you guessed cold for was actually supposed to be impatient, i.e. crossed arms, tapping his one hand on the arm (okay, one can't really see this well, but that's why one of the fingers is lifted), and head lowered in annoyance, and the last one was supposed to be humble, i.e. lowered posture, hand palm up as if in supplication.