I've been a communicator for over 10 years now, which means I am just starting to get a grasp on how to do it. I am by no means great or an expert, possibly nothing close to either.
During the last decade there has been little to no time where I wasn't in a position that good communication was necessary to success. Even when I was not standing in front of a church or captive audience...I spent years in high end sales. And, even in that arena, I had to develop good communication skills.
Something that I have learned is that we don't always need to re-invent the wheel. Many times as a speaker/communicator I have gotten overwhelmed with a sense of having to create something new. The reality is, sometimes people need to hear something again. Sometimes the greatest thing you can do is reuse a resource that exists. I'm certainly not saying just use someone else's sermons or talks word for word....But, consider using the outlines or the primary statements from someone else to help create your talk, sermon or presentation. I love listening to other pastors and communicators. I learn so much from that practice. Sometimes my greatest sermons have come from teacing the very things those folks have taught me!
Consider these quotes, "Good artist copy, Great artists steal." ~ Picasso or "God gave you 2 eyes, so plagiarize!" ~ Ed Young Jr.
The reality is, your job is not to constantly create brand new content. Your job is to discover GREAT content and then communicate that content with passion, relevance and clarity. Your job is to take information that already exists and make it feel fresh, exciting and inspiring. After all, there is nothing new under the sun! (Ecc 1:9)
Whether you are preaching a sermon, giving a lecture or selling merchandise....Consider your audience, your information and your ability. Make it simple, memorable and applicable and you will win.
Focus on that and you will do GREAT!