Get in groups of 2 and pick one of the following examples to illustrate in cardboard.
Keep the size manageable, parts between 6 and 12 inches. Use nails or screws for pivot points and hot glue to join the cardboard.
Pay attention to the depth of the parts in relation to the “ground.” You might need to use spacers to make sure that nothing hits or conflicts.
Note the descriptions and the arrows that denote movement.