I discovered a way to practice this recently, I was drawing with vine charcoal, which is dark and very dusty, and I got dark dust all over my hands. Then I touched my face inadvertantly and I could see in the mirror where I had touched.
Later I tried to wash it off and was able to wash it off only when I really focused on how I moved my hands in order to scrub any area. The entire thing felt like good practice with hand higene. So to practice this, improvise a colored dust—charcoal, ash etc, and practice washing hands and not touching face.
I discovered a way to practice this recently, I was drawing with vine charcoal, which is dark and very dusty, and I got dark dust all over my hands. Then I touched my face inadvertantly and I could see in the mirror where I had touched.
Later I tried to wash it off and was able to wash it off only when I really focused on how I moved my hands in order to scrub any area. The entire thing felt like good practice with hand higene. So to practice this, improvise a colored dust—charcoal, ash etc, and practice washing hands and not touching face.