Keep in mind that I was expressing my current impression rather than a conclusion.
The things which indicated ISTJ are:
1. Your self-report of identifying most with ISTJ. I figure you know yourself better than any of us know you.
2. You stated that you like to view things as simple.
3. You seem to be mostly living in the present without too much theoretical and abstract focus. It's not entirely clear how this relates to your English major, which seems like a more intuitive preference.
4. You describe liking to sit and watch details. (I like to do that too, but I'm always thinking about what they mean and trying to fit them into an overall picture.)
Maybe you could talk more about your intuitive interests... English, literature, poetry, strategy, and things like that.
Edit: I'm focusing only on the S vs N preference for now, since that's really the only thing which stood out to me.