Pleasuring him. Help please..TIA

Hi everyone. I have been with my SO for a while now and when we first got together (we were young and inexperienced) we knew about oral and sex however we weren’t that active with people before each other. We have a great sex life (my personal opinion and he thinks it’s great) but I would like to pleasure him more. I LOVE to give my man blow jobs (Love it). I love the look of pure pleasure he has when I am doing it. I love how he can be the leader and make me do what he wants but I also love that he can submit and let me do my thing. What can I do to pleasure him more? What can I do to him to spice things up?