What is your purpose in providing comments at this stage in the drafting process? How can you use this opportunity to help writers further understand the goals of the assignment?
Which rhetorical concerns are most important to emphasize with the writer at this stage (audience, publication context, visual layout)? Should the writer be considering audience, purpose, credibility or working toward a stronger sense of style? Consider how your comments might inspire focused revision.
How can your comments be constructed to offer both support for the current draft and suggestions for revision? How many comments will the writer be able to address before the next deadline?