How to blowjob

Hi girls!

I've got my first boyfriend ever, I have only been together with girls earlier.

I have a really small mouth and I have problems with my jaw. (Cannot bite an apple for an example) And I'm like kindof freaked out of handjobs also. (Never finished him with my hands)

And I wonder... How do I give him the blowjob he wants me to do?

And how to give a good handjob?