HELP! How to be in control during sex??

Alexandra
So I'm worried because when me and my boyfriend have sex, he's always in control and lately he's been asking me in the middle of it to ride him or when we have sex sideways on the bed he'll ask me to do the work cause usually he'll fuck me when I'm on my stomach on the bed from behind so he's always in control. And I always get nervous cause I've never really been in control before, and I tried riding him but it felt awkward and I was going slow and I just felt like he wasn't enjoying it. I tried grinding on him when we were laying sideways but it just didn't feel right so he took over. And I'm just worried he'll get bored of me. Also because he's been with more girls than me and is more experienced sexually so I lose confidence when he asks me to take over. And I don't have a lot of confidence about my body as is. I wanna learn some tips so I can get more confident and try out new stuff so I can surprise him and spice things up. Any advice or tips on how to be in control in the bedroom with your man?? Thanks ladies! :)