As with any writing assignment, you first need to make an outline of your paper.  Make sure that your outline deals with the prompt you've been given.  Then, use your introduction and conclusion to bookend your ideas.

Your introduction should start with a hook (an attention-getter).  This could be a quote from the piece, a short story that parallels your ideas, etc.  Then, relate your hook to the task at hand: the prompt of your essay.  Lastly, briefly state the points you will make in the body of your paper.

Hope this helps.  Good luck!