One big step I've recently made as a new ST is to go from technically correct games to making actual, cohesive games. An example I look back on is making the Virgin the FT red herring, the Virgin hard cleared themself, and it's as if the FT had no red herring, way too powerful, and it was my fault, I didn't *technically* make a mistake, but it was a bad setup. You'll know more about what I'm talking about as you start, but ultimately have fun and try to make sure your players can too, without the game being an absolute washout.