Look at an essay template, and it will help you. if your essay is over 500 words, I would have you write a rough draft, then a draft, and for the finalizing type it on a computer and use grammarly or some other spellcheck to make sure that it is written right.
a punctuation mark (,) indicating a pause between parts of a sentence. It is also used to separate items in a list and to mark the place of thousands in a large numeral.