Take a minute to read through your writing prompt if you have one, or think about whatever writing task you’re trying to accomplish. Then, for 5 minutes, write about what you know of your audience: who are they, what would they like to read, what do they know, what do they need to know, what is their credibility; say everything you know about them.
Then use that list, and write for 10 minutes about how you can appeal to each of those qualities. For example, I know my audience finds statistics and logical information credible, so I can use charts and graphs and logical argument to appeal to them.

After all this is done, refer back to what you wrote here while you’re writing your actual assignment or task.