LADIES HELP A BROTHER OUT

Zed
Okay so me and my beautiful lady have been together for some time. I happen to be her first which is great but I haven't made her  have an orgasam or cum very often. Can someone point in which direction I should head. Is it size? Or how I use it? Or both? She says I'm perfect the way I am but girls can care abit much to wanna be real about what they want :/ just want to be all she needs you know 👍👍👍