The quality of the black and white drawings is achieved by using black pastel on vellum in an additive/reductive process. The surface is both slick and clean, yet has a remarkable amount of tooth to push the material around on and carve out the image.
The pastel paintings are on surfaces that provide a substantial texture to allow and hold a many layered velvety bloom. These pieces will not be sprayed. It is recommended that they be matted with a double layer mat incorporating a trough or including a spacer prior to framing.