Head.....

So my boyfriend is soooooooooo amazing in bed (sorry tmi Ik) and is always going down on me and fingering me and does like anything to pleasure me , we agreed we're not ready to have actual penetrative sex due to both of us not ready to be parents if something were to happen like if the condom broke and age but he does all that for me and I wanna pleasure him , he's told me that he'd like if I have him head,I've never gave head before though and he has a 8in dick so idk how to ,if y'all have tips that would be amazing, sorry the post was a little tmi .