Serious question: Fast or slow for a bj?? lmao

Bri 🌺✨ • 21
Seriously... I'm 20 years old and have given my fair share of bjs and have received a lot of compliments on them, but my current boyfriend never says anything or cums from it. I don't know if I'm doing something wrong or what. Do most of you move fast or slow when giving them? And give me some techniques to use that work for you, please and thank you! Lol