Interact with your audience
When you finally present your talk, be sure not to ignore the
people watching you. Don’t stare like a zombie into the space
above their heads, and don’t focus intently on your
transparencies or the floor or your shoes or a spot on the wall.
Experienced speakers pick out several friendly faces and
establish eye contact with them, turning first from one person to
another and making sure that no section of the room is ignored.
If you try this, you’ll find that the targets of your attention will
smile and nod pleasantly, affirming the points you’ve made and
increasing your self-assurance. You’ll also have a better sense of
whether to speed up or slow down, or to repeat yourself