A simple definition of critical writing was given above, namely: writing which evaluates and analyses more than one source in order to develop an argument.
What is descriptive writing? Decide what you think first and then twist the facts or refer to texts selectively to make them fit your claims. While you are entertaining a few of your own ideas, you will want to strengthen your own voice.
Most assignments will have a strict word limit, and you should aim to maximise the amount of critical writing, while minimising the number of words used for description. You are representing the situation as it stands, without presenting any analysis or discussion.
Show processes in a logical order. Log in now to get rid of them! Writing for a fellow student: Recall that a paper is always written for a reader other than your professor.