Have you checked for accidental plagiarism? You should make sure that all your ideas are fully developed and all the claims are supported by credible evidence. Use a dictionary or a thesaurus as needed.
Your professor is another resource: use them! First off, skimming. The Elements of Style was first published in You should look for: incomplete sentences; easily confused words such as to, too, and two ; spelling mistakes; apostrophes for possessives and plurals; quotation rules obeyed; comma use; eliminate contractions.
Is your paper organized in a logical way that is easy to understand? You can search for specific help, or browse resources by category. Did I avoid using contractions?
Academic Databases Your instructor may require you to use peer-reviewed academic articles as some or all of the sources for your research paper.