I'm not going to write your memoir for school for you, but I'll give you some tips. Think about important parts of your life and essentially just go into narrative detail on the things you feel like including. Not things that are necessarily important on the outside but things that are important TO YOU. Maybe you met your best friend very young and you want to write about them and some of the things you did together. Let's say you switched schools a lot while growing up, maybe use that as a way to periodize different parts of your life. Tell funny stories from those times, emotionally distressing events during those times you may have experienced, etc. I would say a good starting point is to write down a few of the most interesting experiences you've had or the stories that you really want to tell. If you can't think of anything, there's really no harm in making something up as long as you write it well. You could also read excerpts from popular memoirs and mimic what they did while applying your own unique perspective or twist. Some good ones include Frederick Douglass's memoir, or there's also plenty of humorous memoirs by celebrities or comedians that you can read a few pages from to get a decent idea of the framework and writing style. Even reading a bit of a fiction book told from a first person POV can spark some ideas. I hope that helps!
