Identify your audience.
What is the goal of the speech: persuade? Inform? Inspire/entertain?
Write an outline first.
"Let me tell you a story." Stories are more memorable than facts and numbers. Good stories contains conflicts and creativity.
Develop credibility: show confidence and competence (two key details in your background on the subject matter)
Five cold openings:
ask an open-ended question;
begin with a story;
begin with a bold statement;
tell the audience to imagine something;
begin with hard evidence (Must be credible).
Common opening mistakes:
start with something trite;
clear the throat;
highlight technical/personal insecurities.
Over-prepare: always bring backups - laptop, remote, etc.
Know the material well so that you could speak without the slides.
Last move: get the audience involved in the problem.
Let your audience know how you'll handle Q&A. Jump-in anytime (small group) or a dedicated time.
Hold your Q&A near the end, not at the end. "I have a one final thought to leave you with, but before I do, I'll open up the floor for questions." This handles the no-question scenario, and you'll have the control of the final words.
Repeat the question when the room is large.
Keep the answer brief. If you can't answer the question within one minute, say so. "It's a complicated question, and a comprehensive answer might take an hour. I'll give a shorter answer, and in the interest of time, I'll take another question."
Rephrase the title.
Summary: key takeaways.
A relevant quote. Make sure that the audience likes the author.
Personal tagline: for repeated internal presentations to the same audience.
A call to action.