Bad blow jobs

Hi everyone, so my boyfriend and I have been together for a couple of months now and I feel like I give bad blow jobs? He's tried to give me tips on giving blowjobs. I know he's just trying to help but it makes me feel insecure. When I ask him about my blowjobs, he says he likes what I do, but I don't know if he's saying that to be nice. What should I do?