Hi
I have just written one myself and been accepted on both universities, this is the formula I chose to follow:
How to write a personal statement
BE PERSONAL, FRESH AND DIFFERENT, WRITE IN FIRST PERSON, EXPRESS YOURSELF CLEARLY AND CONCISELY, USE ADJECTIVES AND ACTIVE VOICE VERBS, ADHERE TO WORDS LIMITS (300-500 WORDS) – REVISE REVISE REVISE
INTRO
•Career plan, your interests – ideally a distinctive example that’s specific to your experience
•Mention specific name of the study/program and the degree.
BODY PARAGRAPHS (examples)
•Your own qualifications (degree/work experience)
•Compatibility with the program/position
•Strengths of the program
•Career goals
CONCLUSION
•Wrap up the issues raised and reiterate your interest
•Might also mention how this is a step towards a long term goal
Good luck