My most popular rendering type, Pen and Ink with color combines the sharp edges and focus of P&I with watercolor tinting. These pieces have two distinct stages. I always scan the finished pen & ink before adding the colors. this gives a black and white and a color version of each project. This has proved useful when using these rendering in different media (news print, magazine, billboard etc).
A copy of each stage can be presented both in print and on disk for these renderings.