Noah:
I wonder if it's better to view yourself as a member of your audience, instead of one of your characters. Maybe you have to learn to do both.
I think this is an interesting observation, and in one sense the answer is easy: You have to do both. The more tricky question is
how do you do both.
Writing a story is an act of both creating and communicating. Creating is a personal thing, regardless of whether you invent or recount, and the emphasis is usually on getting things right
for you. The problem is that getting things right for you, doesn't necessarily get them right for the reader - there may be too much background material that is only known to you, or (in a story of the kind we are discussing here) too much "special material" that only speaks to people who share your very specific kinks. Still the personal part of the story is important; if you can't get it to work for yourself, it's unlikely to work for anybody else.
So in addition to being a creator, you have to be a storyteller - you have to have an audience in mind. I don't know how specific that audience has to be; in fact, I don't think I know what my audience is, and probably it differs from story to story. Anyhow, the purpose of the audience is to make you aware that you have to communicate - you have to make them see what you see and make them hear what you hear. And here a new problem appears, because it may not be such a good idea to insist that your readers should hear and see
everything you hear and see; through the senses we can take in much more that there is really room for in a story. So pick the most significant - the things that make the readers think "Oh, that is really how it is". And if that means leaving out things that you would really like to keep, just remember that you have more stories to write, and that nobody will complain if you take an observation from one scenario and insert it into another story!