This is a video I put together after using Pearl, instead of Boomer, to do two demos. Pearl had never experienced incorrect (normal) body language from a human. In the second demo (they were a week apart), she was getting fed up with it.
I put the video together to use at the beginnings of clinics instead because it was not fair to her to talk rudely with my body to demonstrate what people unconsciously do.
I hope you see somethings that help you speak horse more clearly.
International Coach and Clinician National and International Top 10 Competitor Technical Delegate and Judge of Working Equitation