The format of your paper in any class creates an immediate impression: it is either one that says you value the class or one that says you did not take time to do small things well. Below are some of the concerns faculty members have regarding formatting. When you eventually write at work, the impression your texts create will have an impact, so you want to be concerned with the text’s appearance now.
Here is a list of what many professors dislike:
The style manuals like MLA or APA are written for researchers, not students, so the links below will help you get the information you need quickly: check out https://owl.english.purdue.edu/owl/resource/747/01/ or https://owl.english.purdue.edu/owl/section/2/10/ depending on your citation needs; the first addresses MLA and the second addresses APA.