To complete the sky, I used a Colorless pencil to smooth out and remove the visual effect of the vertical lines. This is a Prismacolor pencil that is actually clear wax with no color added. It helps blend the individual lines of colored pencil to create a smooth, even color and texture. I used horizontal strokes and a fairly heavy pressure to blur the colors together. The sharpness of the pencil is not as important at this stage. In this view, I have left a small patch of sky unfinished to demonstrate the effects of the blending process.
This view shows the sky completely blended. Even the smallest blue areas require blending. Your dusting brush comes in very handy at this stage. As the clear layer is applied, small pieces of colored wax will flake off of the surface, leaving a mess and creating potential problems, if not carefully removed.
Starving artist trying to get noticed...(and not starve)