Communication is a sharing of thought. When we speak or write, we transfer concepts or ideas from one mind into another. When this exchange is properly done, it results in understanding for the recipient. Otherwise, it creates confusion.
The key to clear communication is clear thinking, for it is in the mind that thought is born, refined and developed. Thus when an idea has not been properly thought out, it offers little benefit to the audience.
So take time to think. Examine your idea closely. Refine it. Then get it across as precisely as you can.