This drawing, with a bit of watercolour, was done years ago in North Vancouver during a figure drawing session. Probably 15 - 20 minutes. Watercolour, subtly employed, can have wonderful affects. The challenge of working fast forced me to ditch excess thinking. And it's funny, because at first I thought, "Oh, this is terrible." Then the next day, with fresh eyes, or checking out the drawing in a mirror, I think, "Wow! How did I not see how good this is?" Never throw out your artwork immediately after a drawing session. Give them a few days and look at your work with fresh eyes.
When I lived in Victoria, B.C. I ran a figure drawing session for the local illustrator's society. Often I would head over to other drawing sessions. This is one run by a local gallery.
Doodling will give you ideas for projects that you didn't expect. The characters for my book, Flight of the Silk, came from sketches. This picture is one illustration for the book.