BJ tips for a newbie?

So I finally had sex for the first time (cue "yay" tape) and before we actually had sex I was giving him head and he mentioned that I was using teeth, I was so embarrassed cause I wanted to make him feel good, I think it was because I was kind of drunk (don't judge 🙄). Does anyone have any tips for giving better head and NOT using teeth? 
Thanks girls x