A sketch with no pencil is what, a finger painting? And what would be so bad about that? This one, a set of dolphins was done with iPad; procreate looking very much like pastels. There are sketches of my kid’s over painted fingers placed on a page to be decorated later. I may dig that out for you to see. No one would really know that was what was going on but me, unless I tell you. Does it change how you look at the sketch? Maybe. I call small autobiographic notes and posts here a sketch too. A “what if” story that may or may not be taken seriously…