Blow job advice

Hello ladies, so I've been seeing my boyfriend for about 4 months now. We've been at it like monkeys since then and the sex has been great. Recently, I had noticed he would go down on me sometimes and never once asked for a bj in return.. well one day I asked or practically begged to, and when I finally did I was not so rudely criticized but more of told I should watch porn to get better at sucking dick because I don't do it right enough. Now I dont know if I should take that as an insult but I was ecstatically happy to give him one and ever since then when hes asked, I just dont want to attempt again... He even commented that, this is the reason some guys go find other girls because Ig girlfriends like me doesnt want to suck their man off smh.. anyway, I'm not that comfortable sucking dick as I, tmi, have 2 extra teeth along my upper gum line so it makes it a bit difficult to do the job alwhile trying to not hurt him... this morning he was hitting it and commented that itd be nice to get off without having to pound away to nut smh. So id like to find a way to comprimise with him and see if itd improve our sex life just a bit.. I'd appreciate any advice. Thank you :)