@GeePawHill I (mostly) got past the fear of presenting when I realised that almost by definition I know more about what I'm giving the talk about than anyone else in the room, and the people that's not true of are mostly on my side.
I guess there are presentations where that's not the case, but I haven't had to give any of those and I figure if I do I'll still know enough about the subject to argue about it. ;-)