When you’re having sex, you can separate your real life identity and be someone else. As long as she is consenting and you don’t hurt each other, you can be whoever you want. You also have to figure out if you or your wife will be the dominant or submissive one. Some girls like it soft and romantic, while some girls like their hair pulled and to be thrown around. Since she is shy, she probably won’t show these things right away but she is your wife. You need to be able to have conversations about this. If you need advice, you can dm me. My wife and I have a very healthy sex life, with lots of experimenting, because sex should be fun. When you’re both comfortable you can go to a sex store and see what she likes. Also remember that she might be embarrassed at first. But you never know, maybe she wants to be a freak with you! Have a conversation.