When it comes to gestures, not all are universal. It is important then to understand the cultural and geographical implications of the gesture you intend to use. For instance, in England a 'V' symbol, with the palm facing your audience means Victory while the same gesture, but with the palm facing the speaking instead, means... up yours! Two very different messages with just a subtle shift that could make the world of difference in the message you are trying to convey! Know your message and know your audience.