Step 15: Use the remaining lines and shapes as guides to draw the rest of the body. Darken the outer edges of the guides using quick, short strokes to create the shape of the quokka's body. Curve the line on the left a bit as you draw the strokes to make the back more arched. Don't use strokes that are too long, otherwise the fur will turn out too shaggy. Slope the line on the right in toward the left side so that the bottom of the body is narrower. Draw a curved line along the path of the guide and above the foot to create the top part of the leg on the right. Draw a series of short strokes on the top part of the body for fur but don't overlap the arms.
Step 16: For a cleaner look, erase as much as you can of the initial guide lines. Don't worry about erasing all of the guides. It's okay to leave some behind. Re-draw any final sketch lines you may have accidentally erased.
Final Step: Add some shading to your quokka drawing using short strokes for extra detail. Use a dark value for the inner ears and nose. Use a light value along the top of the nose for shine. As you shade the head, use strokes that radiate outward from the nose. Separate each individual stroke a bit so that the white of the paper comes through and creates a more fur-like texture. Use a darker value around the quokka's eyes for shadows and a light value under the head to separate it from the body. Vary the pressure on your pencil to get different degrees of tonal value. For a more detailed guide on how to shade, check out this tutorial: How to shade.
Shade the quokka's body using vertical strokes. Shade lightly at first, and then gradually build up to darker values. Use light and dark values throughout for shadows. Shading time-consuming, so be patient and take breaks. Continue to add more strokes to thicken up the fur and to further darken the shadows. It's a good idea to use reference as you draw for a more accurate depiction of a quokka. Don't forget to pause the video after each step to draw at your own pace. Add a cast shadow underneath to ground the quokka so that it doesn't appear to be floating.