The audience are likely to remember only three things from your presentation or speech

In presentations or speeches less really is more

Proper Planning and Preparation Prevents Poor Performance

No audience ever complained about a presentation or speech being too short

The customer is always right' may have become a standard motto in the world of business, but the idea that 'the audience is always right,' has yet to make much of an impression on the world of presentation, even though for the duration of the presentation at least, the audience is the speaker's only customer.

All those iconic presenters of today were a shy little kid back then.