I support teaching as a great way to get comfortable with public speaking, and adapting to varied characters in a room. Holding people's attention, and actuall

I support teaching as a great way to get comfortable with public speaking, and adapting to varied characters in a room. Holding people's attention, and actually making sure everyone grasps key concepts, for 1-2 hours, is not easy. Reacting and interacting with everyone at the same time is tough but, for me, very fun. A second great way to improve was taught to me on a training course run by an acting school. Standing in a room, delivering an unprepared children's story to no one but to a full sized TV camera. Unexpectedly horrifying. A large lens does not react, does not smile, laugh or frown. After the first take, an actor would return to the room and we'd run over the video. It took a couple of days to get to something acceptable. I highly recommend both methods.