[mnw21cam]

Absolutely. Practice.

Also, don't be afraid to speak slowly, and to have gaps when you aren't speaking. It doesn't make you look like an idiot or make people interrupt you - instead, it makes it easier for people to hear what you're saying, and it makes it sound like you are saying something well thought through (and it gives you time to think it through too).

Also, get someone to video you giving a presentation or speaking about something. Then go over that video with them, and ask them to point out any annoying things that you should stop doing and useful things to start doing. Practice that, over and over.

[tolbish]

Well stated first paragraph, but you're going to lose a lot of people with that second paragraph.

[taneq]

The people they'll lose are giving up some pretty important insight imo.