Sex Tips Please!

So my boyfriend and I have had sex many times, but it's usually all the same stuff. Well I want to surprise him with being really sexy so I bought some new lingerie. And along with that I was thinking of trying different positions or styles but I don't really know what. Any advice or positions to try? (please leave description) Also we both really enjoy the sex we've always had but I just wanna surprise him

P.S. Also how do you ladies ride your guy? Is there anything you can do with your hips/butt to make him enjoy it more? Don't get me wrong, my man loves it and always comes but like I said, I wanna surprise him.

Please help me, I could really use some wisdom 💕 thanks