If you want to be a better communicator, practice with your linguistic cortex. Practice things like roll playing conversations and sounding board phrases. The second reason this is kind of big, that communication, everything makes perfect sense in your head and doesn't translate because of assumptions. So how do you deal with assumptions? This is where the empathic circuits of your brain come in. Even authors do this wrigte when they are writing something. They may know more of the story than they want the reader to know. But it's their ability to empathize with the reader that allows them to put in the plot twist.