How to Add Tones and Values?
In shading, the proper lighting and shadowing is very important to make your drawings
look three-dimensional and closer to reality. First, imagine the position of the light
source. After this, you can determine the direction for the shadow as well as its size and
shape.
Here is an illustration of a shaded pole from a certain source of light.
When you apply shading to your drawing, always remember that nothing should be all
black or all white. In many drawings with shadings, the light parts contrasted against the
black look white but these are very light shades of gray. There are tones in between
white and black, referred to as half tones.
Below are computer-generated half tones. It is computer generated to let you see the
clear distinctions between the shades.