Help please

Hi. 18 year old virgin here👋🏼. So my boyfriend and I wanna try something new, something more than just making out. I wanna give him a handjob and obviously he wants me to give him one as well, but I’ve never done that before and he’s never done any of that before. I’m shy and nervous. I just want any tips or advice please. I’m hoping I can have enough courage to do it.