I don’t know how to ride my bf correctly /u/____pat____ Sex

Me F23 and my boyfriend M22 have a great sex life, we’ve been together since 2014 so we’ve had A LOT of sex throughout the years but idk what I’m doing while being on top? I’m 5’9 and have a skinny complexion so I barely have an ass lol and I wish I could move and jiggle my butt in a more sexy way or even make it bounce but I obviously can’t. I try to move my whole body like a saw while having our chests together if that makes sense hahah but I want to make it better, I’ve tried to practice the movement on my bed but idk what I’m doing tbh. He hasn’t had any complains but I want to surprise him with better moves. Any advise? Specially if you’re a F with a similar body type, that’d help a lot! Thanks (:

Me F23 and my boyfriend M22 have a great sex life, we’ve been together since 2014 so we’ve had A LOT of sex throughout the years but idk what I’m doing while being on top? I’m 5’9 and have a skinny complexion so I barely have an ass lol and I wish I could move and jiggle my butt in a more sexy way or even make it bounce but I obviously can’t. I try to move my whole body like a saw while having our chests together if that makes sense hahah but I want to make it better, I’ve tried to practice the movement on my bed but idk what I’m doing tbh. He hasn’t had any complains but I want to surprise him with better moves. Any advise? Specially if you’re a F with a similar body type, that’d help a lot! Thanks (: