Use a reasonably-sized font: either 10 characters per inch or a 12 point font. And choose a font that is easy to read rather one that is decorative: "Arial," "Lucida," "Modern," "Palermo" or "Times New Roman" are some good choices. Scripted fonts are hard to read even if they do make your paper "look nice"; it is the content of the paper that is most important, and making it easy for your readers to understand that content is always a good choice.
The eighth edition of the MLA Handbook , while suitable for writers at all levels, is designed with teaching students in mind. It explains the principles behind citing sources, provides instruction on the MLA’s system of documenting sources, and offers detailed guidelines on the mechanics of scholarly prose. The handbook includes guidelines on plagiarism and academic dishonesty, tips on evaluating sources, and a worksheet for creating works-cited-list entries. The eighth edition’s system of documentation supersedes the guidelines set out in the seventh edition and in the MLA Style Manual .