How the hell do I be sexy?🤔

I'm laughing writing this because I can't believe I'm 26, have been with my guy for 4 years, am comfortable enough to let it rip in front of him and be gross but Im too shy to be sexy in front of him??😂 I want to do something different for him for Valentine's Day. I want to set up a whole sexy night for him with lingerie etc..But I don't know what the hell to do or how to act?! It sounds so ridiculous, but I can only picture myself being awkward as all hell! 😂

What are some things you guys have done for your husband/boyfriend?