bad blowjob

okay so apparently i gave a bad blowjob. it was the first one i ever gave, i have a really bad gag reflex so my main concern was not throwing up, i have braces so it was really hard to not use too much teeth even though i made a conscious effort not to, and he says that he didn't really feel anything unless i was just using my hand. we're very open with eachother so when i asked if it was bad his exact words were "i mean it wasn't BAD bad it just wasn't... good..." i am extremely embarrassed and i never want to suck dick again lmao. is there anything i can do to fix this?