Coats of Arrms

Have you ever had to make a coat of arms, like for a school project or anything? I never had. I also know next to nothing about heraldry.

For some reason, tonight while running, I had an idea for a coat of arms. This is probably overly complex and in violation of the normal heraldic rules. I won't describe the components; they all may be obvious, or maybe not. Also, when they saw me working on this, my kids wanted to make their own, which they began before bedtime. When they complete them, I may post them here.

I used what may be called "primitive" tools to draw my design, and was it was intended to be a quick prototype. (It's been years since I've made this kind of little art project.)