sorry for late response I thought I replied to it but I didn't?!!? anyway, I kinda go like this in my head - think of a moment when the movement happens, like someone is making a particular dance move and you pause it and think of a specific pose that happens on that frame, if that makes sense? try to think not of a complete and finished move, not just someone sitting straight or standing, but a frame of the movement - someone turning around and waving a hand, someone shifting their weight to the side while sitting and listening to a conversation. I know it may sound hard, but for practice you can watch random videos of people doing really anything - talking, running, dancing, crying, etc. it can be in a movie, in a film, even observing people irl or just yourself! personally that's how I do stuff most of the time, I really enjoy observing people's movements and attitude, how they put their weight into movements. I also just project the feeling into the pose I wanna do - if the person is scared, their body will be tense, especially their shoulders/hands and face, if the person is happy, their body will be more open and their pose can be all over the place depending on their personality (a bubbly person could stretch their arms out and have a huge smile, a more reserved person could have a simple basic pose, but a bit more relaxed and comfortable if that makes sense). when it comes to interactions, think of what relationship the characters have - they may be coworkers, so they seem polite and friendly, but they're not exactly fully relaxed and throw their arms around each other, they respect each other's personal space. when it's a friend or a family, they could be hugging, but hugs can also be different - some are huge, strong and warm hugs, some are awkward hugs, some are comforting hugs. even someone grabbing someone else's hand can differ depending on the relationship the two have and a situation they're in - one can grip another's hand, another can take it gently, third can be hesitant, etc. I hope whatever I'm saying makes at least a bit of sense, but what I'm trying to say is that the smallest details of the person or persons can help you with the pose! their personality, their relationship, their past, you just grab a thing you want to focus on at the moment and go with it! I hope this helps you at least a bit