All right, I declare revisions finished!
Okay, not really. I'm close, though. I did make it through all the pages and accepted/rejected changes. I read the comments (and responded to some of them) and reworked various parts of the book.
None of the notes were harsh (there was nothing saying, "Your writing stinks and you should go away"), but they were thorough. The thing you have to keep in mind while working on something like this is that these comments come from people who LIKED THE BOOK. They want it to be as good as it can be. So even when you feel a note is mildly chastising, it's not.
I want to go over most of the notes again and double-check my work.
I hope to submit my revisions to the Mastermind soon.