Keep in mind that eliminating the fear doesn't mean you automatically will present well. That's the same as being unafraid to sing, but not knowing how to hit the right notes.
You can't present well because you haven't learned the rules. You don't know how to play the game because no one taught you. This is completely understandable. I was the same way. Then I learned to play the game.
The only way to develop a method or systematic approach to any skill is to agree on the parameters that make that skill achievable. In this section, you learn to build a concrete foundation from which to work. With a core set of guidelines, you remain consistent from one presentation to the next, regardless of the content.