I find out that to do better in giving presentation, I must do some trick with my voice. Usually I am quite nervous in presentation, worse still, my body language and trembling voice give me away completely. To avoid that, I now start to fake my voice as much as possible in presentation. My voice is naturely childish-sounding. What I want to achieve is to make it as reserved as possible which not only make it a little adult-like but also make me less nervous by providing a layer between my true self and outside. I have developed a weird sensation when I am giving presentation: it is as if I am floating in the room, looking at myself giving speech and totally indifferent about it. No, I think, it is not the real me there talking, the true me is just daydreaming. Totally weird! But I say considering from the feedback, my body double is better in presentation than the true one.