I personally have utmost respect for traditional artists, as even though digital art is most certainly beautiful, I love to see people stay at our roots and draw with our own two hands on a piece of paper, y'know? And it's amazing that you pulled this off with chalk and charcoal! ^^
Where do you get charcoal and chalk that stays solid enough to achieve this kind of precision control? All the chalk and charcoal I've ever used crumbled, smudged, and could never make a mark less than about a quarter of an inch wide.