Teaching a Spaceman to Spacefish

I've got maybe a year or so of my Insomniacs playtest campaign under my belt, but I'm struggling with how to put that into actionable content in the book. I don't think I've ever used a setting or module verbatim, and I don't know how other GMs adapt canned material for their own campaigns. I have a couple paths forward I can take, however, trails blazed by other designers that have inspired me.