Normally I would re do the copy edit in one pass with a clean diff and cover additional points on their talk page regarding stuff that was not obvious from the diff I would always open with comments on what they did right and thank them for participating I would not copy edit as many articles myself during drives where I did a lot of reviewing as it s time consuming as there s teaching involved Here s two sample reviews User talk Diannaa Archive 6 Check yet another newb s work User talk Diannaa Archive 6 Review of copy edit