Animation: Main
This is a tutorial on making proper shadowing and light sources. This is a commonly unused tool by beginners to Flash. Shadowing can make your movies look more professional when used properly. Anyway, on to the tutorial.
Before you make shadows, you need to determine where the light source will be. Where the light source is, determines how long and what direction the shadow will point. For example, if the light is high up, the shadow will be shorter, while if the light is down low, the shadow will be longer.
Note: To make the shadow, I usually use a medium gray color with an alpha of 50%.
You also need to determine the shape of the object, which will also determine the shape of the shadow.
And finally the direction of the light source to the object determines the direction of the shadow.
As you have or have not noticed, some of the sides of each shape were different colors. Basically, a lighter shade of the color is put on the sides of the shape that are closer to the the light source and vice versa for darker shades.
Experiment around with it and figure more things out for yourself.