Help, giving head.

So my boyfriend and I are in a pretty new relationship. I'm so crazy about him though. Like I think about him all the time. We have had sex about 5 times and they were all pretty great. He hinted Everytime that he wanted me to give him head and I kinda blew it off I think he's frustrated but didn't say anything.

Anyway, I've never given head before and I'm ready to try it cause I'm super into this guy and want to surprise him.

I need technique

tips. So what should I do.