The MLA Style Center website has a great page that explains how to format a paper in MLA style. Their page, Formatting a Research Paper, explains how to format margins, text, headers and footers, page numbers, works cited, etc. Please consult the website and ask your professor to see how you should format your paper.
The Academic Support Resources YouTube page has a great video explaining MLA format for research papers. NOTE: This video suggests that page numbering should always start on Page 2. However, MLA allows for the omission of the numbering on Page 1 only with instructor permission.
The Online Writing Center also created a sample MLA paper.