Feedbacks from friends were very helpful. I sounded too fierce, like YY described, "sounds like a primary school who teach with a serious face". Haha, perhaps I have been too used to teaching in class already. I wonder whether I have been like this when teaching last time, but somehow the students still bullied me. =_=!!!
I think JY's comment was very true, he said that I sounded fierce because I felt scared, and by "intimidating" the audience, I alleviate my fear. It's good to have someone giving constructive comments. I will improve myself in future presentations, especially in BNM where there are listless of presentations coming up...
Another thing I realized from this presentation is that strangely, I feel much more at ease giving presentations to a much larger group of strangers, than to friends I know. Maybe with friends, we have been hanging out everyday, and it felt so awkward to have to stand in front of all of them to speak... It certainly feels much more comfortable sitting in smaller circle,
Anyway, I think this presentation has given me a good lesson. I certainly need to learn to overcome the anxiety, and I need to relax and smile.