On the other side of the postcard, use Crayola Metallic Crayons to draw a vivid scene you might see while traveling through space. One way to make a circular planet is to peel the wrapper from a crayon, then lay it flat on the paper. Grasp the crayon in the center and rotate it to create a fill-in circle. Add clouds and rings to make the planet look realistic. Fill in areas of the image with color to represent mountains, craters, and canyons.