Blowjob tips?

Anyone got any tips on giving a great blowjob? My boyfriend said he does enjoy the way I do it but i don't have much confidence so I think otherwise, I feel like I'm not doing it right but hey is there really a right way?

My problem is I would like to do it and make him come without having to stop but I have to stop as I get out of breath 😤🤔

Any breathing techniques?

Also and techniques on deep throat without taking the boke?

Thanks