Before sharing a manuscript, confirm which level of editing is included, how many passes are planned and how comments will be returned. Discuss the word-count basis, expected turnaround and what happens if the project scope changes. Clear terms reduce confusion once detailed work is underway.
Ask how sensitive files are handled and who owns the final text and any working documents. A professional agreement protects expectations without taking creative control from the author. If a clause is unclear, ask for an explanation before signing or paying.