Essays / Need format help before writing Statement of Intent [4]

Hi All,

I want to know if there are some formats or basic questions I need to answer before I start to write a personal statement or Statement of Intent.

For example:
What are your educational goals?
What are your professional aspirations?
Why have you chosen this major?
Why did you apply to this school?
Why do you want to do what you want to do?
How has your experience prepared you for graduate school?

1) Do I have to answer all of above or i can cover only some important?
2) Do I have to follow any particular order in paragraphs?

I wish to to apply for Masters in Graphic Design / Visual Communication in USA.

I wanted my personal statement to be fun and interesting and to be worded on my strengths. I DON'T have any academic background to begin with but only practical experience of 9 years gained on job.

Can someone guide me to a format to begin with. I dont want to go wrong in the basics (if any).

Appreciate your help and guidance.

Cheers
Vipul