Giving a blow job !!

So my boyfriend is coming over this weekend and we haven’t seen each other in some time because we have both been very busy. I’ve been told that I already give good oral but I want to raise the bar and give him the best blow job he’s ever had ! Any tips or advice? ( I know a lot of people say to include the balls but while I’m trying to raise the bar I’m not 100% ready for that )