I tried two techniques on this one. My usual side of the pencil broad strokes and, for the faces, thin strokes. I used the tip of the pencil and by applying various pressure to make close parallel lines achieved the shape or shadow. It's a shame, really, as some of the strokes are so light that they do not appear in this photo. This is not a technique I use very often as I rarely like what is produced. However, I like this.