Making a living out of public speaking I find it important to keep trying to improve my performance. Here are a couple of basic, but effective details that I use and which I am going to re-polish over the next few talks.
Decide in advance exactly what your first sentence is going to be. This will remove the umm-ing and ahh-ing that often marks the start of people’s talks. There should not be an awkward gap between being introduced and getting into your stride.
Open with something that grounds your talk in the “right now”. No waffle.
Don’t turn round and talk at the screen. Talk to the audience. Glance at your computer if you need to, but you should be comfortable about which slide comes next.
I would be interested to hear your thoughts on what works and doesn’t work in any talks that you have heard. Tips much appreciated!