I used Caran d’ache water soluble crayons on the background. I have a few of them but didn’t use them very often. They work really well in a Moleskine. I ordered some more crayons from Dick Blick yesterday. They can be used either wet or dry. I sketched most of this page with pencil over the background colors. I finished with more crayons and watercolor pencils. I outlined everything with a black Prismacolor Brush Tip Marker which I prefer over the Pitt Pen.