In any talk, presentation or meeting, you want to keep good posture. And no, we’re not talking about a soldier straight position. Instead, keep two feet evenly distributed on the ground, avoid crossing your legs and rocking from side to side. Good posture will also help to support your voice.
If you’re doing it over the computer, ask your friend to make notes about things like eye contact, too – you want to be looking at the camera rather than gazing off to the side. If you’re in front of a crowd, try to look over at everyone.