Answer:
The shading depends on the drawing/effect/etc. Dot shading can give something depth while a regular/fading shade can create shadows and make things look as if light is being cast on them. The location of shading is also important, if there is light being cast from the right then shading needs to be drawn on the left, if shading is being cast from behind then the shading is drawn on the front, and so on.
Step-by-step explanation: