Many of us, have read GM-sections in RPG, RPG blogs, forum discussions, and sometimes books about the storytelling art.
All of these contains tons of interesting tips/techniques (and some will contradict each other, you don’t GM a gritty mega-dungeon and high-school drama game the same way), so I am curious which ones are your favourite and how do you use them in your game
Also make maps that people in universe would use, not a god or modern satellite images. Romans used maps that showed main roads and villages, why would a random adventurer need a super detailed map with borders on it.