Epistolary Writing Assignment

Write a story told through a series of letters. You may design the assignment to fit an own personal lifestyle, but something has to happen. Need to use personal experience only, personal experience mixed with fiction, or it can be purely fiction. Has to be 3 pages, double spaced. I am a 17 year old high school kid, lie to play hockey, video games etc. Just got my drivers license, looking to buy my first car.