Step 20: Use the remaining lines and shapes as guides to draw the rest of the alpaca's body. Simply darken the outer edges of the initial guides to create the shape of the body. Use curved and wavy lies as you draw the edges of the body to emphasize the texture of the wool. Along the way, add a few longer lines that come in to the body for the creases on the wool. Add an extra bump on the upper, right side of the body for the alpaca's fluffy tail drooping down.
Step 21: 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 alpaca drawing to give it more dimension and volume. Pick the direction of the light source when shading so that the shadows are consistent with it. Don't shade the body too smoothly. Rougher strokes give the wool more texture. Vary the pressure on your pencil to get different degrees of tonal value. Make the creases on the wool extra dark. For a more detailed guide on how to shade, check out this tutorial: How to shade.
Add a cast shadow underneath. This helps to ground the alpaca so it doesn't appear to be floating.
You can stop here for a white alpaca or add even more value for extra detail. Use a medium value throughout the body for more detail. Some alpacas even have multiple tones on their coats! Separate each individual stroke a bit so that the white of the paper comes through and gives the wool more texture. Shading your alpaca can be time-consuming, so be patient and take breaks. It's always a good idea to use reference for a more accurate drawing. Don't forget to pause the video after each step to draw at your own pace.