Not everything a speaker prepares for a presentation is a physical, tangible item like movement, words, and slides. A lot of speaker preparation is mental, as in positive thinking, visualization and reframing negative attitudes. Add to this mental preparation the concept of gratitude.
First, think about how grateful you are for the people who have come to hear you speak and the people who are organizing your speaking engagement. They are supporting your cause, they are looking forward to learning, they are wishing you success. Be grateful for your audience, because they're here to take in and spread your message. Be grateful, because without an audience, you can't be a speaker.
Then think about how grateful you are for the opportunity to share something you care about with this audience. Think about how fortunate you are to have people sitting and listening to your ideas and your message for 10, 20 or 60 minutes. Think about how lucky you are to help people and give them something relevant and useful that they can use right now to change and improve their work or their life.
Now, dig down and find the thing that makes you care about your topic. What is it that makes you want to do what you do? What is it that makes you want to share what you're sharing? Find that motivation, that emotional connection, that energy for your topic, and bring it out. Then give it to your audience.
Turn your gratitude and your motivation into energy, and feed that to the audience. They'll give it right back, and then you're connected. It's the last piece that will complete your perfect presentation.
See additional posts on love and gratitude here:
How to accept a gift from your audience
"Have to" or "get to"?