Torn From the Sketchbook
This complex drawing required careful planning.  My Idea was to draw a still life that includes a preliminary sketch of that same drawing.  Of course the preliminary sketch would contain a sketch of that sketch and so on.  Since this idea is about the drawing process, I decided to use some of my studio supplies for the subject matter.
 

A demonstration of this drawing is in my book  "Drawing Realistic Textures in Pencil"  published by North Light books.
 

Torn from the Sketchbook
 

 

by J. D. Hillberry
Information supplied by: http://www.jdhillberry.com