Be sure you are prepared for the interview by practicing ahead of time with friends or other professionals. Practice answering questions that pertain to your work history, work ethic and your past educational experience. For the interview itself, you should dress in business-casual attire, and you should conduct yourself as you would in any other formal business setting. It's also a good idea to take additional copies of your application documents with you to the interview in case your interviewer requests a copy.
A personal narrative is designed to accompany your application, and serves to give an overview of your life to the colleges that you are applying to. When constructing your narrative, strive to be concise. Every sentence you write should help illustrate an important theme. Discuss your strengths. Make sure to address your weaknesses as well, but don't dwell on them. Instead, highlight how you learned from them and how you used this knowledge to better yourself.
Design the resume you are submitting with your graduate school application so that it highlights your academic background. Focus on your education, awards and honors, but also list any relevant work experience. References should not be listed on your resume, but include a line that they are available if requested.
Be sure you're prepared to take the GMAT exam before beginning your application. Tutoring companies such as Kaplan offer private one-on-one classes and have a variety of self-study options, all of which are designed to help you achieve a higher score. Also, be sure to limit the number of times you take your test, as the schools you apply to will be able to view the scores from all of your attempts.