We took night photos, drawing in groups with light in the air, and then the inscription remained recorded in the photo. Of course, the class did not take place at night, but with the blinds and shutters closed, so it was dark in class. They used a flashlight on the phone to draw, and I brought them colored foils that changed the light to blue, red, or green.
Of course, the class did not take place at night, but with the blinds and shutters closed, so it was dark in class.