Everything about this is highly contextual and varies across cultures. Smiling in some situations makes you look powerful, in many others it makes you look weak. Being very animated can make you look carefree in some situations and just wild in others.

The more time I spend in cultures that I didn't grow up in, the more convinced I become that there just aren't any universalities in this direction. Any attempt to do so is to try to generalize over all human behavior and the effort will either be wrong, being that there will be some cultures or situations where the rule doesn't hold, or it'll be useless, essentially telling you what you already know.