Sketch - Value Study in Line

The purpose of this sketch was to draw two sketches of the same place on the same sheet of paper, but different ways of showing line weights and contrast. The place of the building needs to show a window wall, back wall, floor, and ceiling. I chose to draw our studio room. The top sketch shows the value of the space by using line weights, and the bottom sketch shows the value by using high contrast as the shadow. I think that I wouldn't change anything because it has fulfilled the purpose.