It is important to put yourself in the shoes of the Admissions Officer: why would your personal statement be unique, how are you different from the other candidates? Primarily you need to decide how you will divide your personal statement into digestible chucks. The most obvious way is to divide into paragraphs of 100 words. If you aim for between 500 and 600 words at most, it will help your admission officer when they have to read thousands of personal statements to find the perfect student.
These seem like a lot of questions, in essence they develop the background to the information you will actually put in your statement and answers to any questions. Answering these questions keep you on track to keeping your personal statement PERSONAL. Look for common denominators in the answers you have written, this may help formulate a theme or connection you can build into your personal statement.