Advice badly needed on tweet essays

Could anyone please give me some advice on how to approach a “Tweet” essay using 140 characters?

Try to answer the question in as few words as possible to start with, but give yourself a lot of slack and get all of what you want to say on paper. Then go back and try to make the response more concise. Repeat until it’s at the desired length. It will take some time and creativity, but I find that it’s easier to cut away words than try to write in the confines of a word limit.