I just watched a video of a very competent online marketer. She stood in front of the camera, as if rooted to the spot by some magical spell. She made small hand gestures.
Aargh.
One of the reasons to have a video is to show, not tell. Move around! Jump! Hold up some props!
Make your hand gestures meaningful.
One way to get started is to tell a story or illustrate something you do. My friend Pam Ellis did this very well on her blog video: http://stagingellisdesign.com
She’s a natural: I gave her some direction and she took off. What do you think?