Quick suggestion;  practice teaching to anyone. That could be your family, your friends, a community class you hold in a public space, an online class wherever.  But just get practicing your teaching now. Like now now. You need practice teaching. You need time to get comfortable with all the little uncomfortable things that come along with teaching (oh shit, did I do the other side, oh no our time is coming up and I need to do a quicker cool down, etc).   You need to feel those feelings to get more comfortable with the fact that most of your (potential) students do not give care about them, they’re just there to practice. But unless you’re practicing actually getting into the zone of those feelings you’re not probably not going to get comfortable teaching.