These are just amazing. I love charcoal and I do it so seldom in the classroom just because of the mess factor - you've inspired me to dive back in, soot and all!
I must admit to avoiding charcoal too sometimes. It is very messy - but worth it :-)
I was wondering what grade level you used the Stormie Mills charcoal lesson? The artwork is really fabulous! Would you be willing to share your lesson plan?