You are way too worried about your ability and the kids’ response to you. Parents are another matter but that is largely out of your control. I am sure most of the parents will be supportive when they see the positive effect you have on their kids. You know how to paint and how to write and how to explain things. Just take the task head-on and treat the kids as you know you would want a teacher to treat you when you were a kid. It is all inside and just let it out naturally. I am sure it will go over very well in general and you may just start a few natural talents down the road to further growth. Don’t fret. Maybe start out on “Impulse Power” and slowly build up to Warp One and Two. You have a lot of childlike impulses and curiosity. You will do fine. Cheers.