Outline your original drawing that could be easily removed with an eraser. Focusing on your subject will make it break it down into dark and light shades, which will eventually help you while shading. Focus on your object and its shadows. Once you have determined the shadows of your object in your mind, start refining your sketch. Focus on the external shadows and highlights. Remember that the highlights are never making perfect circles while the shadows lines are never perfectly straight. Once you get to determine all the minute details in your mind, move to the next step. Otherwise, continue observing and focusing your object.
With the help of a pencil, outline the interior contours while following the object’s original shape.
Select a pencil for shadowing your image. Pencils that are made from charcoal are recommended for shadowing denim, wood, eyelashes, eyebrows, hair, fur, pupil, leather and all the other dark objects. Pencils that are made up of graphite are recommended for shadowing skin tones, silk, glass, porcelain and any other light objects.
Use your pencil just like the blending technique in order to create different effects and textures. However, make sure that you hold the pencil very gently while shading, as it will give you better control and results. Use facial tissues to soften those pencil strokes that are hardened and for blurring edges of the shadows. Once you have achieved the desired result, move on to the other area where you want to create a shading effect.
After completing the shading, finish your work by blending your lines and colouring if you need.