There are a lot of books you can read to help you with your Public Speaking Superhero’s Journey. Here are a few suggestions.
Improving Speaking Skills
Overcoming the Fear of Speaking
The Power of Practice
The Power of Passion
The Power of Authenticity
The Power of Audience Engagement
The Power of Confidence
The Power of Organization
The Power of Persuasion
The Power of Story Telling
https://www.amazon.com/Art-Storytelling-Steps-Presenting-Unforgettable/dp/0802411339/ref=sr_1_11?s=books&ie=UTF8&qid=1524104943&sr=1-11&keywords=storytelling