Too many words - too many slides. If you have 45 minutes, don't have 80 slides. Allow about 2 minutes per slide - so for 45 minutes - have 20 slides. Worse yet, don't cram a lot of data on a slide or have a video that's just a PowerPoint slide show that goes so fast, people can't read the information. Avoid using PowerPoint altogether if possible. But, if you have to use it, use graphics and photos for each slide and make them as entertaining as possible. PowerPoint should be used to make points powerfully - remember that and ask yourself these questions:
a) What is the point of this slide? Zero in on that point.
b) What is the most powerful photo or graphic I could have that would powerfully make my point?
2. Not having an objective for your presentation
Don't just jump into your presentation. State your objective(s) in your introduction. What do you want people to gain from your talk? This helps to set expectations and creates value for people. When preparing your presentation, your first task is to write down what the objectives are for your presentation. When preparing your presentation, answer these questions:
a) What do you want people to gain from your talk?
b) Will you have a call to action?
With clear objectives, you will find that preparing your presentation will be a lot easier, on point and you will be more powerful and confident. People who ramble usually do not know their objectives.
3. Don't ramble
Ramblers have not adequately prepared. Have you ever been to a presentation where the speaker has gone way over their allotted time? Unless you are completely mesmerized by their presentation, you will probably leave or be thinking about leaving while they are still talking. The worst thing is, you and everyone else has stopped listening and are becoming increasingly agitated. To avoid rambling, a little preparation will go a long way. Create your objective, 3 main points, sub points, your introduction and close. You can prepare a talk in 2 hours or less following this method. I wrote an eBook on how to do this. Grab a copy here for only $7.
4. Be present to what's going on
If you sense that the audience needs a break, take a break. Tune in to what is going on with the audience by acknowledging it. Tuning in will connect you with them and will engage the audience.
5. Don't pace back and forth
Deal with nervousness before you present. Pacing back and forth to work off nervousness is a distraction. If you have a case of nerves, anxiety, fear, panic whatever before you speak, you will find that you can reduce 75% of your anxiety by preparing and practicing. Before your talk, you could also practice deep breathing with loud sighs, to produce the "good feeling" hormone, oxytocin. There are other techniques to help you relax before a presentation, including exercise, yoga, meditation (or listen to a meditation CD), visualization (visualize everything going well), and affirmations (affirm that you will provide tremendous value to everyone and that you will do well). Plus, my personal favorite, take the focus off of you and focus on the value that you will be providing for people. Get into action and quit focusing on all of the sabotaging self-worry talk - that shift in itself is powerful. These techniques will work for the majority of people - but, if they don't, consider hypnosis to relieve any deep-seated triggers that you may have that cause panic.