An example of the Pencil Sketch filter from Alien Skin Snap Art.
The Pencil Sketch filter simulates a graphite or charcoal sketch with cross hatching and shading.
Alien Skin Snap Art is a collection of filters that can give your photos the artistic styling of colored pencil, Impasto, Pointillism, pen and ink, pencil sketch, pastels, comics, watercolor, oil painting, and Pop Art. Pencil Sketch is one of ten artistic effects filters included with Snap Art.