Given all the publishing activity that's begun in response to Kickstarter's insane ability to gobble in money for its clients, Guy Fullerton has posted an absolutely fantastic set of guidelines for the prospective module-publisher. He also references an earlier set of posts on the specific topic of editing that were done at Gothridge Manor.
Here is the link to Guy's first installment.
Here is a link to the Gothridge Manor series, but I recommend going here from within Guy's posts where the link appears.
Anatomy of an Adventure Writing Table
7 hours ago