This is my first post here. So here's the story: I've been playing D&D 3.5 for about a year now, which is exactly as long as I've been dungeon mastering (I was the guy who got picked for the job of dungeon mastering right from the founding of our group). I enjoy it very much, but I have some problems with the process of making up adventures and campaigns. I have not and do not want to use a published campaign setting as I feel that it might compromise my own creativity, but at the same time I'm not confident with my method of world building because I don't know any other dungeon masters, meaning that just about everything I do originates from my own head and the DM guide. So basically, I'm interested in: 1)Other peoples' takes on using campaign settings, and 2)some methods of world building from those who do make up their own worlds and adventures. I would go on the Dungeon Master's Guide, but I don't think it would give me as many perspectives as I could get from veteran players and dungeon masters.
Currently, my method goes as follows: 1)Design the area/s that the players will begin in, 2)let the players have fun with the various lures and adventures I've loosely laid out, 3) plan the next segment or piece of my world according to the players' actions. It's a fairly roleplay intensive style of play that I do as well.
Also, I've been trying to implement history into my world, as I think it creates an entirely new dimension to the world, which makes it more believable. Some takes on that would be interesting too.