I know exactly what it's like. When I come up with some interesting story for Brix and/or Jinky, I have a pre-conceived notion of the direction the story will go. But, when I put them in the story and let their respective personalities loose, the story goes somewhere completely different. Sometimes it ends up better than I thought, sometimes worse. But it's entertaining to sit back and watch it unfold, even though you're the creator (who should have at least some idea of what happens next). Instead of being the architect of all this, you end up being the one responsible for transcribing it all into words or pictures - the middleman, if you will. Sometimes, you just can't do justice to what's happening in your head.
Make a sincere complement on a really nice mustache, and all of a sudden, she's not your friend anymore. - Marty Feldman.