One of the people who have taught me the most about presentations is the American-Japanese guru Garr Reynolds. We met when I attended his excellent presentation seminar in Paris this past winter. Mr Reynolds is also interested in LCHF, and he has now analyzed my lecture video on his blog:
Fairly good grades and I got some extra pointers by mail. Next time the sound recording will be much better, I’ve ordered some equipment for that.
If you want to change your world then it’s like mr Reynolds says: “presentation matters”. I highly recommend his first book: Presentation Zen.