For this week, to hone your powers of description, spend some time describing the most memorable person you've ever met. Include both physical and psychological characteristics, and be as detailed as possible. Go back to it in a few days and note what's particularly vivid and what's unclear -- or even what seems extraneous -- and edit it. (But wait few days to edit. At first just let the words spill.)

Or if you'd prefer, work on something else with a different writing prompt.