We can talk all day about logistics, like notes or no notes, lectern or no lectern, PowerPoint or no PowerPoint, props or no props. We can talk all day about the fine points of delivery: authenticity, eye contact, crutch phrases, humor, stories and whatnot.
But if your content is not relevant to your audience, you are wasting their time.
If your content is not applicable to their lives, you are wasting their time.
If your content is not based on real, practical solutions and tools, you are wasting their time.
When's the last time you looked at your material and asked yourself how relevant and applicable it is to what's going on with your audience right now?
Have you researched your audience? Do you know what their concerns and challenges are? Do you know what their strengths are? Do you know what their interests are?
If you don't make an effort to learn these things, your content will not be relevant. The audience will not be able to walk out the door and apply the information to their lives.
Audiences are not interested in hearing canned, reheated presentations that don't apply to them. They need to know you've made the effort to know who they are. They need a speaker who can give them what they need and want in the real world, not in some theoretical universe where your words sounds pretty but have no practical application.
Find out: Who's your audience? Why did they invite you? What do they want?
Then deliver something just for them. Deliver something they can use. Deliver something real.