I wanted to add a sprite sheet to give my model more fluid mouth movements, but it keeps getting messed up no matter what I do and I can't understand why because when I look at the tutorials I feel like I'm doing literally everything right. If it matters, my canvas that I drew the model on is 720x720 and I used two different programs and three different methods across those programs to pack the mouth sprites but the results have been identical no matter what (see attached video)

https://va.media.tumblr.com/tumblr_svsydixhW41tg4xfu_720.mp4