If you, as a doctoral candidate, do nothing else, keep a log of all comments and recommendations made by your mentor and committee members, and make certain you address each one before you resubmit your proposal or dissertation. If the recommendations or comments are from the dean or formal editor, absolutely do not resubmit until you have addressed each one.
Remember, you must obtain signatures from your mentor, both committee members, and the dean before you can graduate. You need these professionals.