While you can use any of the latest AI Apps to enhance your presentation. And you may find it easier when you do the basic preparation of the speech.
A few things that are truly  important is keeping yourself hydrated before a speech. Having to deliver a long presentation and speech can be quite challenging with a dry mouth.
Secondly doing a technical check  if you also have a presentation to support, prior to your speech is equally necessary. As whatever be your presentation  if it does not synch with  your speech, it can be rather challenging.
Third make sure to take a deep breath before you start as it helps balance your mind &  body easing the nervous system, and enhancing present moment  awareness. This is truly helpful where you can easily improvise in case you forget a few lines which can happen to anyone Inspite of preparations.
Most of all having a good night sleep before an important speech keeps you looking fresh and in the now.

If you love what you do

And are lucky to do what you love

Speaking from your strengths is actually easy

For it flows from within

About that which you are passionate about.

Prepare well

But remember to flow…

©Savvy Raj