Did you miss the first 5 things? Check them out HERE! And numbers 6 through 10 are HERE!
11. Never apologize for interrupting/stopping conversations. You have heard a presenter say it; he/she will ask the audience to engage in a conversation about X, Y, or Z, then after a certain amount of time, the presenter will say something along the lines of "I'm so sorry to stop your conversations." This statement is pointless considering these are conversations that must come to an end in order for you to continue with your presentation.
Instead, thank the audience for the robust discussions, then move on with your presentation. Consider saying "Wow! What great conversations! Thank you for engaging. Now to the next point." (Bear in mind you can always evaluate if what you have to say next is as impactful as the conversations. If what the audience is discussing brings more value than the content you had prepared, then consider letting the conversations continue for a few more minutes before continuing with your presentation.)
12. Never diminish your power. For instance, avoid ...
a. saying it's your first time doing anything, e.g., making the presentation, designing a presentation, traveling out of the country, et cetera.
b. saying "I don't know." (Want to know what to say instead? Read this.)
c. folding your arms; remain open and warm. (Check out this post to find out what to do with your arms and hands.)
13. Never position the audience to engage in too much multitasking.
Here's a true story ...