We discuss what I bring in together (the letters from last session that you read about in my thread were an exception). T told me she won't ask me to bring stuff in so that I can decide when to do it but will always be happy to see whatever I want to bring in. So we're flexible about that.

I wouldn't worry about having to explain artwork. I do explain mine to my T too she makes interventions and questions and we go through them together. I think I taught her to understand me better this way.
If I bring something written, I usually read it to her. Don't be afraid to talk to her about how important it is to you, I'm sure she'll welcome the way you communicate. Keep sharing if you feel comfortable with your T, she might just have to learn your "language".

(glad you got many suggestions on here!).