Recently I was asked to produce a pencil sketch of a sexy, amazon woman, in action and in a reasonable amount of time.
This is the result.
While it may be far from perfect, I think the exercise was definitely worthwhile. It's been a long time since I took a pencil drawing seriously. Usually I rush them, keeping their purpose only for a base to later complete in Photoshop. The thought of not having any layers or 'Apple + Z' was surprisingly frightening.