I may be able to help you.
I have a few questions.
1) is there a specific person you have in mind that you'd like to write about?
2) Is there a rubric or student guide to give more information on what the assignment is about?
3) Also, does your essay need to be in MLA format?
A biography essay is an essay where you tell the story of a person's life. It's a chance for you to do research and learn interesting facts and opinions about someone. That person could be a historical figure, a famous actor, politician, artist, writer or inventor. The point of the biographical essay is to reveal who that person was and what contribution they have made to the world.
In order to write a great biography essay, you'll need to develop a thesis statement about them and write supporting paragraphs with information about their life and work. Finally, a conclusion will help show the lasting impact they've had.