Though what you are looking into is right, I think you are aiming too low.
What you need to do is look into Cold Reading.
Just living on the earth long enough to be posting on this forum tells me you are capable of telling positive body language from negative body language.
You really dont need to know that wringing the hands shows worry and anxiety. What are you going to do with that info, react to it?
No you need to build a strong frame and bring everyone into your reality. You need to learn Cold Read routines. If there are none in this forum, pm me, and I will send you some. The forum should have a place for them though.
Why just "know" their body language, when you can learn body language by "influencing" body language, and as an added bonus, you are DHVing.
PM me if you need help, but thats the path I would go down if that is what is interesting you.
happy hunting
-Jazzy
