You can do it Sheryl! I don't experience that fear, but I can get antsy when the words don't come out like I want them to. I understand about making the words, mood, pacing and style come out just the way you want. That is a challenge for sure!
You have a lot to offer. Employ the BIC HOK method (butt in chair, hands on keyboard).
I don't know how to write for children, I'm more on the adult side of things. I want to learn how to put a cook book together. I have ideas for those too.