Giving head

Okay so my boy really wants me to give him head and I have tried once but kinda panicked and stopped. I liked the feelings of his dick in my mouth I was just super nervous. I’m scared I might accidentally bite it or do it wrong. He is amazing at pleasing me and i want to do something for him for once. I need tips or advice on how to give good head that will leave him wanting more and tips on how to avoid using my teeth on accident. Any one have tips or advice?