Place a sheet protector on top of your drawing and trace your contour lines.
Begin lightly sketching your contour lines onto your gray paper. Notice that they are just modified cylinders and spheres.
YAY! You did it.
Start adding your middle grays with your 4B charcoal. Be mindful of what direction you should be shading in. For example; circular motion, curves, horizontal, and vertical lines are just a few.
Continue shading and adding some contrast. Contrast is the light areas next to the dark areas. This will make your artwork stand out from across the room.
Still shading using my 4B and 6B charcoal.
Add white to the areas that reflect light.
Blend and add detailing.