Step 15: Draw the musk ox's horns by first darkening the top, left edge of the initial circle. Continue drawing the line downward , then curve it to the left as you follow the curved guide on the side. Follow the path of the guide and draw the shape of the horn around it. Make the tip pointy. Draw the horn on the right side the same way. Darken the top part of the circle first. Then curve the line toward the right as you follow the path of the curved guide line. Draw the horn around the guide and make it thick. The tip should be pointy. Add a few lines in the middle of the horns at the top for extra detail.
Step 16: Use the triangle-like shapes on the head as guides to draw the musk ox's ears. Use quick, short strokes to darken the edges and add some strokes inside the shapes too.
Step 17: Lightly sketch the shape of the musk ox's leg around the guide under the body. When you get the shape right, darken the leg using quick, short strokes. Make the shape wider at the bottom for the hoof. Split the shape of the hoof using a small line on the left.
Step 18: Use the line on the left as a guide to draw the musk ox's other front leg the same way. Draw the shape of the leg around the guide using quick, short strokes and add the hoof at the bottom.
Step 19: Use the angled line on the far right side as a guide to draw the first hind leg. Follow the basic path of the guide as you lightly sketch the shape of the leg around it. When you get the shape of the leg right, darken the lines using quick, short strokes. Add the musk ox's hoof at the bottom.