Why does k2tog tbl look so bad?

Hello! I’m working on a sweater for my toddler and on the arms the pattern instructs you to k2tog tbl. I thought I was doing it correctly but I’m getting this obvious loop on my fabric. Any chance you can tell what I’m doing wrong? Thank you!!

Hello! I’m working on a sweater for my toddler and on the arms the pattern instructs you to k2tog tbl. I thought I was doing it correctly but I’m getting this obvious loop on my fabric. Any chance you can tell what I’m doing wrong? Thank you!!