Network LucasGames XWingAlliance Rogue Squadron PodRacers IndyJones . Patch Commander SW Edit Zone Trail's Guide Ultipla Warzone Yoda's Addons . Well, I can't say for everyone else, but after quite a while of doing this stuff, from level editing and AI scripting to programming the level editors, I've formulated it for myself. There's nothing like polishing pieces and then putting them together to form a complete picture, telling your own story, basically creating your own world. You get a chance to tailor the game exactly for your taste, making it yet more fun to play.
Many people seem to put level making next to wizardry.
It isn't, really. However, it does require a lot patience and hard work. And it takes really a lot of patience and hard work to do it well. At times it can even be frustrating. In fact, I can promise it will be at times.