When you make a presentation, you are communicating with your audience. I have said many times that you are in effect having a conversation with the folks in front of you. Having a conversation involves LISTENING. Listen to what management guru Tom Peters has to say about listening. Wow!
How do you listen while making a presentation? You pay attention to the audience. You listen through your eyes in addition to your ears. If members of your audience are dozing off, your eyes are “telling” you that you are boring and you are using too many bullet points.