Need Advice

So my boyfriend and I have sex fairly often and i want to try something new. He knows I like it when he is in control but he doesnt take as much control as id like. He has recently joked about how he does all the work (even tho he gets blown everytime before sex). He knows im into being choked, spanked, hair pulled, pinned down (sorry if tmi lol) but its never enough and doesnt happen or feel the same when i have to ask. Any advice on how to get him interested in being in control and rougher sex?