Monochrome sketch on wrapping paper

For making these monochrome drawings made ​​on wrapping paper, students in seventh grade have used three different types of pencils, a charcoal black, a pastel reddish-brown, and a white pencil. On the copy of the drawing, they had to color the shadow areas with black, the neutral zones with the color brown, and the area illuminated by light with white. In the gradation from shadow to light, these shades were blended one in the other and mixed together to create a value scale. The use of wrapping paper has made it possible to color the drawing with a white pencil, to obtain very realistic lighting effects.