It can often help to see something done well before you start yourself. So, we've collected a few sample MLA papers that illustrate some of the various ways that students put together their arguments.
These are real essays that came from real users, even though we've removed any identifying information. We've also submitted each of them to a number of plagiarism-checking sites. So don't even think about trying to claim them for your own (not that you would 😇).
This is a great standard MLA essay about social media usage. It also includes a perfect example of a blockquote towards the end.
MLA is often used in the humanities and can include all sorts of reference types–including movies.
This composition does a great job of covering the basics. As a plus, it handles acronyms amazingly, tbh. That means "to be honest" (or so I'm told).