i do all of those things in general conversation. If it’s an difficult/important/contentious question like “what do you think about euthanasia?” well then yes I’m going to think about how to phrase my answer = hesitation
stumbling over your words is a sign that you haven’t figured out how to phrase it properly yet = slips of the tongue
I’m generally a shy person, so I tend not to look people in the eye, but glance from their eyes to the background and back to their eyes = darting eyes
I’ve got high anxiety resulting in general body tension, meaning i am pretty much always fiddling, tapping a foot, etc = hand activity
so when someone is paying close attention to me in an official capacity, like a job interview,my anxiety increases, and because I know it’s a problem I try to stop it my sitting on my hands, and hide my self-consciousness behind forced smiles instead of worried looks.

FBI fail!