Directions for using your spectrum noir paper stumps: Pour a small amount of our spectrum noir blending fluid into the lid of the bottle. Dip one end of an appropriately sized paper stump for the area you wish to blend into the blending fluid. Using a circular motion, blend the line between two pencils colors together for a smooth and seamless result. As your paper stump gets dull, or you wish to use it with other colors - use the available sander, to sand the end of the stump back to a point.