These are sketches which are blended with water instead of the traditional means of blending. It’s similar to watercolor pencil.
For comparison, this one is regular pencil:
The water-soluble pencils blend smoothly and easily. The same effects can be achieved with standard pencils. This is just another option with its own distinct possibilties. I have a few ideas for making use of the drip patterns.
The above drawings are listed on eBay now at :