Am I a Bad Kisser? ☹️

Okay so I've kissed my bf before obviously but something was wrong w last night. I have a smaller upper lip and I try to give him my bottom lip so he's atleast kissing something but I keep noticing last night that like 2 times my teeth kinda hit his upper lip. Is that because he was leaning too much into the kiss? I was very tired last night and a little cranky but I thought I was kissing normally until that happened. I just got a bad vibe about the whole situation. Was it cause I was tired and lazy or do you think I'm just becoming a bad kisser? 😱😰