A good rule of thumb is to use the PAST framework: Present yourself, Achievements and skills, Story and motivations, and Tie it all together. This will help you stay on track, and ensure that you're covering all the important points. And remember, keep it concise - you don't want to ramble on for too long, or you'll lose their attention.
Now, you might be thinking, "But what if I'm not interesting? What if I'm just a normal, boring person?" Don't worry, everyone has a story to tell - even the most mundane-seeming person has something unique to offer. Think about what makes you different, what you're proud of, and what you're excited about. And if all else fails, just be yourself - authenticity is key in these situations.
