Hari's scribbles

[empirefantasy]

I would say, objects has colors blue,red,green,light blue, etc.
Parts behind the light needs to be dark, because there is not light on it.
Parts directly in front of the light are very lighter because there is a lot of light in it and light is white.

Use logic, don't learn mechanic. also look in tut forum, there are a lot tutorials about shading and way to do it.