If you already have a draft of a manuscript, double-check the instructions for authors section of your chosen journal publisher's website. Book publishers generally have instructions for a query or proposal on their websites. If you don't have a draft of a manuscript, check the journal's website to see if they accept any type of proposal (sometimes termed "pre-submission inquiries" or queries).
Though you probably won't complete a manuscript or proposal in one week, this task will help you organize your citations and write a manuscript to impress the pickiest of peer reviewers.
If you don't have a citation manager, now is a good time to sign up for one. They allow you to store your citations, share them with co-authors, and create a bibliography in your journal's preferred format.
Check out our guides for writing and managing your citations and guides for two recommended citation managers: Zotero and EndNote.