Blowjob

I’ve been dating my boyfriend for a year and I really wanna suck his dick, like I have urges and crave to do it, but I’ve never done it before. He was my first for everything. I really want to make him feel special, but every time I tell myself tonight is the night, I chicken out. I know he wants me to do it, but he never asks or pressures me to do it. Any advice?