Crumple a paper bag, draw it, paying particular attention to its texture and how it works on the page as a design. Finished page size will be 11" x 14". These will not need to be mounted, but can be, if you’d like the practice. Pay very close ATTENTION TO DETAIL! (Did I mention detail?) Try to not focus on the linear (line) aspects of the drawing, but make it more about planes, gradations and value shifts. You'll be pleased with the results.