Step 15: Use the remaining lines as guides to complete the rest of the arctic fox's body and tail. Use quick, short strokes as you follow the basic path of the guide lines for a fluffy, furry feel.
Step 16 (optional): 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. Also re-draw any final sketch lines that you may have accidentally erased.
Final Step (optional): You can add some shading to your arctic fox 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. Vary the pressure on your pencil to get different degrees of tonal value. You can also add more value throughout your drawing for an arctic fox with a brown summer coat. For a winter coat, just stop after shading. It's always a good idea to use reference for accuracy. And remember to PAUSE the "How to Draw an Arctic Fox" video whenever you need help.
Add a cast shadow underneath. This helps ground the fox so it doesn't appear to be floating.