Nobody ever stopped reading E. B. White or V. S. Pritchett because the writing was too good.
William ZinsserEvery successful piece of nonfiction should leave the reader with one provocative thought that he or she didn't have before. Not two thoughts, or five - just one. So decide what single point you want to leave in the reader's mind.
William ZinsserGet people talking. Learn to ask questions that will elicit answers about what is most interesting or vivid in their lives. Nothing so animates writing as someone telling what he thinks or what he does - in his own words. His own words will always be better than your words, even if you are the most elegant stylist in the land.
William Zinsser