Above: Sketch made from the TV, watching a "Top Chef." This is one of the competitors. Pentel pigment ink squeezable brush pen. In a Flex Book sketchbook, which I'll review next week. Click on the image to view an enlargement.
Choices about ink delivery can be important to the over all look of your sketch. And while this sketch has a definite messy look I quite enjoy the way I used the dry-brush effects of this brush pen: the Pentel pigment ink squeezable brush pen.
I drew my contours in quickly by first squeezing the pen and making sure the ink saturated the brush. After the main contours were in I worked in the dark value areas like the hair, and beard until the brush started to go dry, and then I filled in the lighter areas of shading with the resultant dry brush, and lighter pressure.
It's a very quick and fun way to explore making different drawing vocabulary marks.