Share a little about the materials, processes and techniques used to create this piece. Paul Heaston's class - Pen & Ink Essentials, San Antonio River Walk done in pen and ink on Arches Watercolor paper, 140 lb. 9" x 12." Is the piece for sale? No What are you most proud of? The fun that I had working on all the projects. What advice would you give someone starting this project? Work on everything. The projects give you lots of practice. Paul provides the materials and easy to follow instructions. You can trace the contour of the drawings (that you are not practicing your contour drawing skills on) and do the washes, hatching, cross-hatching, etc.