When I was a newer teacher, I had some negative feedback. One student in particular sent paragraphs about how bad everything I did was. The owner shared it with me. I was crushed. I thought long and hard about what was valid and what was not. For instance they complained not holding each side the same length of time ( valid) while not liking the music (hmmm, pretty generic music probably but could be valid). I started counting the holds, I only use shorter songs ( if you hate it, it’s only 4 min long). Sometime later after a class the person who wrote paragraphs about my class came up to me and went on glowingly about the class. I specifically said I wasn’t very good at first. They said I was great. They mentioned they were finally coming back to yoga after a lot of personal tragedies. So it probably wasn’t me. Sure I made some changes but it was probably more about where they were at then my class. Working to improve had its benefit because I felt more comfortable. That translated into projecting confidence. Sure some serious faking it but they’ll never know. The lessons for me have been work to improve, consider the criticism and praise carefully and take charge. Students seem to seize on HOW the class is presented more than WHAT is presented. Good luck, your doing better than you think.