I relate with this. I was coaxed into hosting an event at work which included celebrities as guests. Though public speaking is something I am comfortable with, the entire thing left me in jitters. It went well, somehow. People congratulated me. I used most of the points you mentioned here. They are absolutely true, no matter what kind of event you host or speak at.
Thank you for writing this. In future, I’ll makes sure to include all of these points.