Nice work all around mate, love that character study. It's interesting how the theme of intersecting strong linear forms repeats throughout. The nose into the brow ridge, the mandible into the malar mass, neck into mandible etc and the use of acute angles throughout the shadow shapes, even under the eyes - maybe should also be used in the hair more thoughtfully (note it's also used even in the eyes, lips, shadow suggesting the sternocleidomastoid)
cheers!
