It's hard to say; I'm probably not consistent in any event.

Eye contact for sure, because I'm a good listener.

I stand straight with good posture and don't fold my arms across my chest, that sort of thing. If I'm paying attention, I know what to do.

Body language was the topic of a speech I gave in college. I had demonstrated some of the body positions with stick figures that I drew on the chalk board. The entire class was in an uproar when my professor's body language (a woman) was exhibiting all the signs of flirtation and admiration while I spoke. I got an "A" in that class.