Take the time to do things right. It is amazing how many people attempt to circumvent the process for creating a dynamic presentation. With a world of microwave dinners, marriage of total strangers on TV, and get rich schemes, it is easy to get caught up in skipping proven processes.
Before you create your first PowerPoint slide (or anything else for that matter), first determine the goal of your presentation. In other words, what do you want your audience to think, feel, or do differently after your presentation? Simply knowing the information is not enough. If that is the case, send an email instead.
It's amazing how first setting a goal helps everything fall into place. It's nice to aim at a target...and hit it!