Allison Christians, Really Basic Rules for Writing Good Papers in Law School, 23 Green Bag 2d 181 (2020) – “This extremely brief guide is intended to help students write good papers in law school. It covers paper structure, substance, and style.”

And if you like to see papers with consistent headings and useful tables of contents: Allison Christians, Using Word Styles to Improve Writing (July 22, 2019) [both references via Mary Whisner]