Deepthroat help

Y’all. I’ve been with my boyfriend over a little over a year now and BJ’s are like his thing. Loves them. Needless to say I’ve given a lot over this past year and polished off my oral skills. I’ve never been able to deepthroat buttt this weekend I gained a super power or some sh*t and it happened. Like I did it pretty good too, my guy came in like 3 seconds. Turns out this whole damn time his fetish is deepthroating (he would never tell me because he didn’t wanna make me feel bad because I couldn’t do it). So I tried again the next time and failed miserably. Like practically threw up. Basically what I’m saying is GIVE ME SOME TIPS TO NAIL SWALLOWING THAT 🍆 flawlessly every damn time!!!