Use open gestures

Keeping your movements relaxed, using open arm gestures, and showing the palms of your hands the ultimate see, I have nothing to hide gesture are silent signals of credibility and candor. Individuals with open gestures are perceived more positively and are more persuasive than those with closed gestures (arms crossed, hands hidden or held close to the body, etc.) Also, if you hold your arms at waist level, and gesture within that plane, most audiences will perceive you as assured and credible.