Presentation skills for anyone that is interested, needs it or forced to attend is now available at your company and at your convenience. Many people are quite natural with their use of gestures, they use it during a group discussion the same as they do in a one to one conversation. The size and frequency of the gestures may vary in when you are giving a speech in front of a large audience. Gestures certainly improve your presentation skills but they should be used effectively in order to add spark to your presentation. Gestures should vary with the size of the audience. If there is a large group of audience then your gestures should be large enough to cover all your audience. Gestures can certainly enhance your presentation skills but not everyone is equipped with the natural charm that comes with gestures. Gestures may not look equally good on every Tom, Dick, and Harry. Make appropriate use of gestures to suit your personality. Have a distinguished style of presentation and don't ape anyone.