Okay just need a bit of advice... 😬 kinda TMI

So my bf and I have been dating for a bit now and he goes down on me every now and then but I have never given him head... I’m kinda shy to just start this because I feel like it will be awkward and what if I some how mess it up (he was my first and I was his first) so I’ve never really done this before but I want to... any tips or advice? Thanks and again sorry if this is TMI 🙃