blow job tips

i give my boyfriend blow jobs all the time. he says i do amazing and i make him cum every time. but he says i do need to work on my teeth. so please someone help me hid my teeth. i’ve got things before like “just hide them” and “put your lips over them. but my top lip is small. and his dick is big so it’s hard. the only time my teeth don’t hit, is when i deep throat. by i can’t deep throat every stroke. so please someone give me useful tips😂