So what we'll do is, we'll make sure that the spelling is all correct, that the punctuation is in the right place and that the copy makes ... after you've finished proofreading.
Editing begins while you are still working on your first draft. It has to do more with revising the logistics of the paper than grammar and surface-level errors. Proofreading takes place when editing ...
A proofreader, is, by definition, a person that is essentially a post-draft-editor. Proofreading is an activity that occurs after a draft of an article, blog, manuscript, etc., is completed.