A lot of people labor under the misconception that communicators write pretty words. Interspersed with pictures and white space.
The placement of grammatically correct sentences on a screen or page is only the outcome of a much more fundamental process.
Communication is fundamentally about trust. It is what happens when one human being engages in a dialogue with another. A dialogue based on mutual respect and recognition that others have something worthwhile to say.
Communication is goal-oriented. But the goal is not simply to vomit words at your readers. It is to honor their intelligence and critical faculties with a meaningful piece of information or insight.
Good communication is honest. You can hear somebody speaking, as if to a friend.
It is not about obfuscation. About verbal martial arts.
It's not technology, used as a substitute for substance.
If you want to communicate better start with your heart. Open it and keep it open. If you are lying or hiding from yourself, your heart will tell you.