Bj advice

I need some advice on better ways or different ways to please my fiance. He is then only person I've been with so I dont have any experience with learning things. I just had a baby 6w ago, haven't been cleared by doc to resume regular sex yet so I give him bjs to tie him over. I don't feel like I am very good. He told me to watch a video and learn something lol but I thought I could ask for some tips and tricks on here as well.