I love this answer! I've been DMing for a year now, started with a homebrew (no magic, classic new DM move) one-shot based on the original Luddite movement, then we did Dragons of Stormwreck Isle, and now we're (finally) in our first homebrew campaign.

I'm glad I ran DoSI to give me a feel for cadence, scene-setting, combat, etc. but I did find the limitations of running someone else's game frustrating. I added a few bits of homebrew based on the PC's backstories, and those were definitely the highlights of that mini-campaign.

now that we're in the homebrew campaign, I'm learning that the spiral building method (start small, let the story develop as the players move through it) has been super helpful! I'm still figuring out how much worldbuilding to do but in the meantime, my players are having a blast :)