If you've finished writing your paper, congratulations! BUT WAIT! You're not finished, yet. There's still more work to do.
Look at it this way: Suppose you are a woodworker, and a client has ordered a custom-built chair. You've made the parts and put the chair together, but it's not ready for delivery yet. You need to test it, to make sure it can hold up when someone sits on it. You need to sand it, to make sure there are no splinters or rough edges that will injure your client or ruin his clothes. You need to stain or seal the wood to protect it, and then polish it until it shines. After this important work has been accomplished, you're finally ready to deliver your product.
The same is true with your paper. Before it's ready to turn in, you need to:
Your paper is not ready for "delivery" until all these steps have been accomplished. For the first two steps, see the boxes below. To put the final polish on your paper, see Step 13 in the Research Planning Guide.
Here are some links to other websites that discuss the importance of revising and rewriting your original draft:
Why Write Several Drafts? - great advice on editing and proofreading, from DeMontfort University.
Revising Drafts - strategies for effective revisions, from the University of North Carolina.
Revising the Draft - from Harvard, this site offers excellent suggestions for revising, plus a great example of revisions from E.B. White.
Proofreading is essential! You've worked so hard on your paper up to this point—why would you waste all that time and effort by skipping the step that will help to make your paper the best it can be?
Written communication is much harder than most people think. When you're talking to your friends or family, you use words, of course, but you have other tools to help get your message across. Your facial expressions, vocal inflections, and gestures help convey your meaning to your listeners. But when you write, you only have your words. You need to make sure that you have said what you mean to say. That's when proofreading can really help.
There are several ways to proofread, and usually it's best to use more than one:
Remember this saying: "You don't run like you walk; you don't write like you talk." Your professors expect a certain level of professional or academic tone (see "Using Academic English" in Step 11). One purpose of writing papers in college is to help you learn to write like an adult—or like a professional—rather than a kid. Take advantage of this opportunity to gain skills that will help you in any career you choose.
When you go through the proofreading process, you may discover that one or more of your points need further substantiation or support. If that happens, here are two courses of action that can help: