What to Do with Your Hands When When You Speak? - Public Speaking Tips & Rehearsal Techniques 

You may be thinking, “When I give a speech, what do I do with my hands?”
Do not put them in your pockets, behind your back, or have all gestures mirror each other. In other words, add variety.
Have a default position that is waist level. Do not draw attention below your belt. If anything, bring attention towards your face. You can always use your remote control to keep your hands together. Then let one of them move as seems natural at the moment.
If you want to direct attention to your visuals, you can use one hand and follow with your eyes, keep your hand up as a pointer, and look back at the audience.
Rehearse this when you are making friends with the stage.
Effective presenters get noticed, get promoted, and make more money.
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