But perhaps you should have done that earlier. If you have a study sheet in hand and you have reviewed your lecture notes, the next job is to review them again focusing on what the question asks you to do. To be sure, you will have to write something. First, as a rule, the more intelligent prose you write the better. But not so fast.
Quality is always the key.
If your name is Abe you might be able to write classic prose on an envelope. Alas, most of us do not write with the power and simplicity of President Lincoln. Think before you write. Good writing is succinct. As a rule it is re-written writing.