I dunno ): I wanted to write a story and so I wrote one. I tend to just write out write down disconnected scenes that come to mind; through those scenes I insert arbitrary information on how characters interact with each other, how their personalities are like and trivial details about the world. Usually I just leave my story in pieces like this and let it rot, until whenever I suddenly come up with an idea to connect them all together naturally, at which time I sit down and write out the whole thing at once.