ah, many painters sometimes, maybe as a studio, love charcoal, maybe charcoal for grayscale those values, maybe even for broad strokes, or both. however yes, you can use a brush directly, or try charcoal if you like. I haven't tried the charcoal sticks very recently, very different from graphite but fun. charcoal pencils i found them less scary, i find it difficult to sharpen well, sharpen, but it's medium gorgeous, broad strokes or very fine, dark or soft values, they actually do amazing things with charcoal, it reminds paint, maybe even using