If you are talking to an audience look at each person in the audience. You may have heard that you can look over the heads of your audience and focus on the back of the room. This is bad advice. Eye contact is essential to establishing credibility, and credibility is the most critical aspect of communication. Your job, like the television anchor's, is to establish one on one bonding.
Nonverbal communication is important.
Up to seventy percent of communication is nonverbal . Eyes, dress, posture, body shape, grooming, gestures, etc., are important to effective communication. Even when you're not talking you're communicating. If you are listening to people, pay attention, smile, nod, do whatever you can to indicate that you are interested. Most important, really listen.