I love that you can change the expression on a face just by slightly adjusting the eyebrows... a little furrowed... a little lift... a little sideways. Bushy eyebrows. Manly eyebrows. Thin ones. Arched ones. Eyebrows can be so easily overlooked, but I think they are the key to a character's expression. These small lines in the drawing carries so much weight.
So in honor of eyebrows, I think today will be Eyebrow Appreciation Day. :)