In one sentence, describe what the following article is about:

Gather your notes together and try organizing them into an outline. Your outline should include separate sections for the introductory statement, each separate body paragraph, and your closing remarks.  If you're not comfortable making an outline, consider arranging your notes into a flow chart or similar organizational tool. The important part of this step is to provide structure to your previously unstructured ideas. As soon as you've organized your thoughts, you should begin writing the first draft of your letter. Understand that this should only be a first draft; you'll need to make revisions before it's ready to send.  Include everything you can think of that seems important, and describe it with as much sensory detail as possible. You might end up with way too much information and way too many pages, but you can trim away the unnecessary points during the editing portion of the process.  Refer to both your informal notes and formal outline for this part of the process. Also, note that you should follow the guidelines provided in the “Structuring Your Letter” section of this article. After completing your first draft, step away from the letter for at least one or two days before you think of editing it.   At a very basic level, you need to proofread the grammar and structure of the letter. Even more importantly, you also need to proofread the letter for accuracy and consistency. Your facts should be correct, your ideas should be original, and your tone should be evenly professional. While not strictly necessary, it may help to get external opinions from qualified sources. The best people to ask include professors and students currently enrolled in graduate school. Ideally, you should try getting in touch with someone already enrolled in the specific program you're applying to. That individual will have a clearer understanding of what the university wants from its students. Analyze the motivation letter using your own critiques and the critiques of others. Don't be afraid to rewrite the letter several times until you get it right.  Remove redundant language or ideas, as well as information that isn't directly focused on the main idea of the letter. On average, the letter should only be about one full page in length; anything longer is usually considered unnecessary and discouraged. Note that some programs may look for letters ranging between two to three pages long. It's best to read through the application for specific information regarding length; if you are unable to find such information, sticking with one page should be safe. Make sure that the most important arguments are positioned earlier in the letter than less significant points, and rearrange the contents of the letter as needed to make it flow well.

Summary:
Write an outline. Draft the letter. Return to the letter several days later. Ask for constructive criticism from reliable sources. Revise the letter as needed.