I had no actual reference as I sketched this. My intent was to just practice hatching lines (evenly spaced strokes with the same pressure) to create a random shape of value. I started seeing some facial features so I brought some of that out with an eraser. I did more of the hatching alternating with an eraser till I put in detail in the eyes and mouth. It is really just a doodle; kind of fun when they turn out to look like something! I need to put the iPad down and do more sketching and get ready for getting outdoors.