One way to draw a sphere is to draw a circle and shade it with a crayon. You need a sheet of paper, a crayon, a pencil, a cotton ball, an eraser, a compass and a drawing board to accomplish this task.
- Draw a circle
Lay the paper on a drawing board. Fasten the pencil on a compass and draw a circle on the paper. Make sure not to distort the stretch of the compass when drawing to avoid an improper circle.
- Shade the circle
Decide your light source and use the crayon to lightly shade around that space. Use quick, gentle sketching motions. Smooth out the shading with a cotton ball to give your sphere a smooth, reflective surface. Take caution not to smudge the reflection of the light source.
- Darken the shadows
Shade the sections where the light source does not hit and use the cotton ball to smooth. This creates the midtone.
- Shade the core shadow
Shade the side opposite the light source to create the core shadow. Smooth the shading with a cotton ball. This is the darkest part of the sphere. Use the eraser to erase any out-of-line marks, taking care not to distort the shading within the sphere.