What do you want to write about?
Anything true. Fragments are fine, and badly written is fine. Nobody reads this but you and Maro.
Or start from a Common App prompt
Your essays.
Pick one up where you left it, or start something new.
350 words each. You answer four of the eight, and one reader reads all four together.
Quick check: shapes a reader has seen before
Caution, not corrections. None of this is wrong, and keeping any of it is a legitimate choice. It is here so you know what a reader will recognise.