Advice for being on top

So of course we get it on all the time xD 

But he's on top nearly all the time, I love it but I want to build my own skills. So lately I've been going on top more often trying to figure out what he likes and what he doesn't and also mastering the technique. But Everytime he doesn't find it as enjoyable as when he does the work, which is really upsetting because I want to make him feel good and relax. I've tried bouncing, leaning forward, and grinding but it's the up and down motions I find hard to do especially if I'm right on him in cowgirl position, any advice on how to get him hooked on it? 

Also whenever I'm on top and ask him how it feels he says nice which is good because I'm on the right track but I don't understand why I can't make him feel good, he even starts to work from underneath me which I find insulting but at the same time it feels so good it's annoying me. I reaaaallly want to do it entirely on my own and have it feel amazing for him. I guess it could be because of the position itself because I can feel it more sometimes from behind and not the front. 

Can you help me?!