Write Your Personal Biography. A character reference and writing a biography are synonymous.What is written expresses a person's personality in addition to accomplishments. When writing your personal biography, descriptive writing is allowed, yet, not to the point of being flowery.hat follows is a character reference using a bit of descriptive writing, written by me, to replace my son writing a biography about himself. Whether composing a biography, or character reference, for yourself or if someone else writes it, it should be in 3rd Person format.