Present Your Agenda
Get from point A to point B so you audience knows exactly what it is you are teaching them or selling them. Nothing is worse than to go around the subject and confuse you audience.
Get To The Point
It's perfectly ok to say your hello's or good morning's to your audience, but get to subject matter quickly. The thing about webinars is that people can quickly click on the the little "X" of their browser if they lose interest. You have 8 seconds to convince them they you should stay and watch for an hour. Unlike actual presentations, it's not rude to just leave the session.
Organize Your Q&A
Create a list of commonly asked Q&A's that you think your audience might ask. There are already many factor going into the webinar, the last thing you need is to be distracted by doing it all at once.
Watch The Clock
Remember to practice your presentation, there's nothing worse than going over time and not having the time to get Q&A's in. Audience participation is key, so keep the presentation to limit of 45 minutes and 15 of Q&A for an hour long presentation.
Finish your Q&A with a quick run through of all the main points you think are important to leave you audience with and then say good-bye. After that good-bye, get ready to send a follow-up email.
Have any other tips on how to rock a webinar? Let me know in the comments!