You can draw a snowman nose in a few simple steps. First, start with a curved line that begins near the center of the snowman's face and extends down towards the bottom of the face. Then, add a smaller curved line on top of the first line to create the shape of a carrot. Finally, add some shading to create the illusion of a three-dimensional nose. You can also add a few details, like buttons or a scarf, to make the snowman look even more lifelike.