I'm glad you guys like it! I may even get started on another one tonight, maybe.
To answer Redshine:
The pens I use are (quoting the package): Faber-Castell, 6 PITT artist pen, shades of grey.
They're not black ink, gives me trouble with scans, uhm grey shade brush pens. Which is why their faces have finer detail - a careful light touch with the tip, versus the more confident heavy lines for the rest. ...And well yeah I have photoshop to clean up the worst skritches, and I use a light box for the final draft to make sure there is no pencil residue.