How to get into sending sexy pics

I really like the idea of sending sexy pictures to my guy, but I know he thinks sexting is mostly just hilarious and awkward. Honestly I agree with him that the text messages are too silly for me and just make me uncomfortable. I know plenty of people love it and I’m very happy for them! It’s not my thing though. What is my thing is sexy photos. I think I look super-hot sometimes and want to send him something fun. But what is the etiquette? I want to make sure he doesn’t open it with somebody looking over his shoulder or at work or something and get in trouble and I want to be sure he’s comfortable receiving sexy pictures from me at all! But I’m not sure how to bring it up. Do I just say “hey, I was feeling sexy and took a picture, can I send it to you?”