Sorry for two posts so close together, but they are unrelated. I remember reading a character analysis meta sort of thing a few years ago about Tony. It was pointing out how uses body language to fake confidence even in the early movies before he is showing overt signs for PTSD. Specifically, in how he would have been taught to never let his hands betray his nervousness, that if he thought they might to keep them busy. Such as by holding a glass of alcohol, which he does constantly.

I cannot find it now, and I was hoping someone else might have thought to actually bookmark it.