No one likes to listen to a boring speaker. If gestures are not used when speaking, the message is usually perceived to be stiff and boring. Gestures must be correctly used, however, if they are to be read correctly. Correct nonverbal communication use of gestures is extremely important when speaking to groups of people from different cultures. Sometimes a little nod of the head or a pointed finger can ruin the message if perceived in a different manner than was intended.
Eye contact is an important channel of interpersonal communication.
Be sure that you do not make eye contact with just one person if speaking to a group. Make everyone listening feel important by showing interest and concern for them. Think of how many times miscommunication has occurred because of the tone of voice used by the sender of the message. No speaker wants to communicate in a monotone, but it is important to understand what parts of the message need stressing through enunciation and raising of the voice. If the message is unclear and the receiver needs help understanding it, the sender must remain calm and not raise his voice regardless of this discontent.