If you have the opportunity, put yourself at ease by chatting casually with some audience members or fellow panelists before your presentation. Speak with enthusiasm Just as we wouldn't become absorbed in a play if the actors merely read their lines in a mono-tone or stood motionless on stage, we can't expect our audiences to become fully engaged unless we as speakers put some physical energy into our work. When presenting, you are in the spotlight, so use vocal inflection and pace that fit the ideas and stories you are telling. Speak loudly enough to be heard by people in the back row. Inaudibility is probably the single greatest vocal sin.
Nothing is more irritating to attendees than having to strain to hear speakers.
Be conscious of your articulation. Use pauses to let points sink in. A strong, well-modulated, enthusiastic voice is one of your best selling tools. Most of all, say what is true for you. Whatever your topic or audience, your presentation conveys as much about you as it does about your product, your theory, your proposal or your platform.