The UCLA law reference librarians regularly host workshops and provide guest lecture on writing scholarly papers:
For additional guidance, try the following resources:
Additionally, you may want to reach out to faculty who are familiar with the subject you are writing about- generally, they will provide the best feedback on whether your topic is reasonable and relevant and they may have recommendations for relevant books and articles you should consult or arguments you should consider.
If you are a student at another school, we encourage you to reach out to the reference librarians, faculty, and writing centers at your school.