Casual users (including kids) have been creating art with Photoshop for some time now.
At any rate, there are multiple free software packages that can do the "creating art" job at least as acceptably as GIMP. Consider MyPaint or Krita.
At any rate, there are multiple free software packages that can do the "creating art" job at least as acceptably as GIMP. Consider MyPaint or Krita.
He has a number of tutorials available on his site too: http://www.davidrevoy.com/4-tutorials.html
I believe he also uses Gimp with the Gimp Paint Studio presets for some things: http://code.google.com/p/gps-gimp-paint-studio/