It is natural, as we develop a presentation we get too close to it. We understand what we are trying to communicate to our audience. The best speakers and presenters know they need to test their material before delivering it to its intended audience. Find someone you can trust to give you honest feedback and get their opinion on your presentation. A separate pair of eyes and ears will find things and have new ideas. You will benefit from their ideas as you deliver a more effective presentation that achieves its intended purpose
The best way to develop your presentation skills is to get honest feedback and to improve the areas that have been identified. Check out my coaching pages or the free resources page to download the self evaluation form to see where your skills need refining.