Tips and tricks needed for an amazing BJ!!

So I can probably count on one hand how many times I have given my husband a BJ. I have had severe lock jaw my entire life and just can’t open my mouth wide enough.

Recently I have been having PT on my jaw and it feels AMAZING!!! I want to give it a shot!…. Only downfall is that I have no idea what I am doing!!!

Is it all about the lips? Do I move the tongue around? How about my hand, is that like 50% of the BJ? Slow? Fast? Changing pace constantly or keep it consistent?