Step 10: Use the initial arc as a guide to draw the gazelle's muzzle. First re-shape the arc by giving it a few more bumps as you darken it. Then add a thick curved line at the top for the gazelle's nose. Draw a line below the nose that extens to the left to create the mouth. Use quick, short strokes when drawing the mouth.

Step 11: Use the initial line as a guide to draw the horn. Lightly sketch out the shape of the gazelle's horn by making the shape of the guide line thicker. Once you have the pointy shape of the horn, go over it using darker strokes. Add a bumpy texture to the horns as you follow the light sketch.

Step 12: Add the horn on the other side the same way. Lightly sketch the shape of the horn using the first one as a template. Then darken the shape and add the bumpy texture as you go along.

Step 13: Draw lines inside the gazelle's horns for the ridges. The lines become more frequent near the bottom.

Step 14: Use the initial shape on the gazelle's head to draw the ear. The base of the ear should be inside the head. Draw a few lines within the ear for the fur. Draw the ear on the other side, but draw it facing the other side.