Do you have any models of papers like this written for this prof in the past?
If your professor is willing to give you a sample paper or to send you to look at a journal for examples of professional publications, you can learn a great deal about what your professor expects. Or if you have written papers for this professor before, look at those again to remind yourself of this professor’s expectations.
As you look at the models and samples, ask yourself what you can tell about
- outside sources (library materials, interviews, surveys, observational research)
- personal experience or analysis
- formality of language
- standards of proofreading