Hello,
un "tuto" très intéressant de B Bolland
http://www.brianbolland.net/lessons.html
I haven't produced any artwork in the last ten years. Everything is on the computer. The only artwork out there is in the hands of dealers and collectors. Some is popping up on Ebay. I don't really have time to do commissions. My inks and paints have long ago dried up so the only drawing I'm doing is in ball point pen and/or Sharpies and mostly at conventions