Picture that nervousness like a ball of fire in your stomach. (Sometimes it actually feels that way!)
Now instead of holding that ball of fire in your stomach and letting it distract and scare you, toss it out to the audience instead. With your opening statement, story, quote, question or startling statistic, throw the ball of fire right out to the audience.
Take that energy that's balled up inside you and release it. Share it. Spread it around! Use that adrenaline to propel the power and excitement of your opening.
When the audience gets that fireball and feels your energy, they want to give it back.
Or in other words, they get fired up!