Ultimately illustration done by traditional media has to scanned into the digital realm. Some media scans better than others. Generally a flat surface is better than shinny. Watercolor scan and Gouache are excellent. Soft and hard pastels scan well, although in my experience the tooth of the paper is more visible under the scanner, and changes the appearance. Another negative is the delicate surface, it’s easily damaged.
This is why I chose oil pastel, it’s flat and scans well as shown here. The surface is very durable, and can be touched without damage. It can be harder to work with, but with experience it creates wonderful textures. I am very pleased with the scanning.

Illustration for “David’s Journey; A Lost Boy of Sudan” 14.5×12″ Oil Pastel on Lt Brown Pastel Paper

With all the people this illustration it was overwhelming at times. It’s difficult to do small figures in pastel, and especially oil pastel. There are a few adjustments I need to make yet, but it’s a relief to have it mostly done.