This goes without saying. If you want to write better, you have to read more. Your essay might be on any topic; you have to find relevant material to read. Read as much as you can. You’ll be able to pick up key words when you read more. You’ll also familiarize yourself with various writing styles when you read. Look into styles that you find yourself most comfortable. It could be creative, expository, or any other academic style. It exposes you to various writers and their styles as well. Different communication styles also help you understand how your readers would perceive your thought process when written down.
Do your homework
Yes, to do your homework, you have to do your homework. You should research everything you can about the essay you are going to write. Establish your topic. You can find a topic on your own. Think what you’d like to write about the most. Sometimes, you’ll have a particular topic given to you. Research as much as you can into that topic. Organize your ideas before you start writing. You should be ready to write multiple drafts before finalizing one. Once you have written a final draft, proofread it and revise if necessary.