Sharing something creative tends to be highly emotionally charged because it's so personal to you. I've had similar experiences in the past when trying to share writing and other things that my then T didn't respond well to. In my case I knew she didn't because she told me. She was never the most tactful persona anyway, but it hurt me terribly. If you think your T would respond well, maybe try telling him how you experience his reaction to your art, as someone else suggested. It could open up a really useful dialogue about what you need from him and the process of sharing your art. I'm sorry you feel so bad, I know it's so very painful taking the chance of sharing something so deeply personal and then not getting the response you wanted.