For this weekend's bonus (on top of the 200 sketches) is another 60 sketches on a single sheet of paper. (The bonus missions are on top of the regular missions, not to replace them.)
Use your 9 X 12 paper and divide it into at least 60 boxes. Sketch the same real-world object in each box. Of course you can focus on different parts of the object, the object from different angles and perspectives, or the object in different settings or positions.
Try not to think too much about this page as a comic, though, perhaps, of course, it is. Instead, focus on letting your hand take control. Let transitions or stories arise naturally instead of planning them out ahead of time. Let yourself "see" without already having seen the completion of the project with a plan.