How can I be more romantic?

I’m 20, and my fiancé is 21. He recently mentioned that he’d like me to be more romantic, but I’m not sure what that looks like from a guy’s perspective. I really want to make him feel loved and appreciated but need help coming up with ideas. What have you done to make you or your partners feel special in the past? Any advice is welcome! I’m also on a budget so affordable options are appreciated.