Planning Part B and launching into your first draft _ Planning the structure of your essay and allotting your own word limits to each part give you a framework in which to develop the content. Naturally, there are three main parts introduction, body and conclusion. From the notes you have made previously along with the questions you need to answer, this is where you condense your prompts to fit each of the three sections. Relevance, power to support your application and evidence of who you are is what you are looking for.
If you are applying to several different schools using one generic statement will be easily recognized and just as easily dismissed. WHY _ because you will be seen as not making an effort sell yourself to this particular school, low effort equals low interest to admissions representatives. Remember the admission committee will likely view thousands of these statements from qualified candidates and they will spot a weakness, flaw or lack of attention to the process in a heartbeat. What you don't want to do is give this committee an easy excuse to dismiss your statement and application.