do you have any advice for writing a campaign? I have no idea what I’m doing, and I need help.Start small – think of a single threat or villain, then come up with three things that villain might do that could involve the party. Those are your first three adventure ideas. After each session, update that list with new ideas.
— Mike Mearls (@mikemearls) November 26, 2017
Also, steal from existing adventures. Phandalin from the starter set is a great starting village that you can use over and over again. Use the side adventures in that set as a model for stuff you can build.
— Mike Mearls (@mikemearls) November 26, 2017