Blowjob

So a couple days ago I gave my boyfriend a blowjob for the first time and it was sadly very devastating. I could not get even half of him in my mouth. So there just happened to be a sharpie next to me and so every time I went down, I would draw a line on his penis to see how far I was able to get. I eventually made it a little passed half way but still. I've gotta get better.