Well first it needs a subject, then it needs a purpose, is it argumentative or informative? Is it a narrative? After you've decided you need to make an introduction and an introduction needs three things, this first one is what my English teacher calls a hook, to get people interested. Then you need to make a thesis discussing what this essay is about, and a plan to show how this essay will be done in technical terms. Then after that, you should find details on what your subject is about and write in the format that you chose. Finally, you should have a conclusion to reiterate what the introduction said along with your newfound knowledge, and there you go that's all I know about essays.
