First, here’s the video from last week:
For this week’s assignment, try drawing the pictures below. The first one shows a rough preliminary sketch (which I would draw first, very lightly), followed by the finished sketch with shading. The second one is already shaded.
After drawing them, try setting up some objects on a desk of tabletop, shining a light down on them so there’s a clearly visible shadow side, and drawing them.
Also, here’s the video from last week: