I write in that same way. I think of the scene in my head, then attempt to record the scene that I’m seeing, like a movie in my mind. Yesterday I read an article on the value of plotting out your story first, so in the future I’m going to try to use that method, but of course it wouldn’t work for the Unending Tales multi-authored stories, because we have no idea of the plot or where the story will go. We can only influence it via the chapter we write and then let go of the reins , lol. I can’t wait to see how they explain the events in my chapter …ha ha.