Well, you've got to give a personal anticdote, really! If you need help with editing after you've written it, feel free to ask then.
Meanwhile, I can give you some tips if you need.
If you are going to write about your past, make sure it is all in past tense.
Since you are writing from the other person's side, take into account their actions and how they felt, and make sure you write in first person.
Think about yourself. Think about how they saw you and how your side looked to them, so that you can describe yourself in that instance.
Hope this helps out! Good luck on this!