| For a simply shade
effect:
Create a new layer and draw a shape on it.
From the layers palette right click on the layer
your shape is on and check the box next to Lock Layer. This will stop
any painting on the transparent part of the layer. The only place that
will accept pixels will be the colored areas.
Select the Spray Can tool.
Set your foreground color to black.
In the Tool Palette set the Opacity to 3, the
size to 20.
Run the spray can along the edges of your shape.
For a circle to produce a "shadowed area" you simply spray one
half of the circles edge as below in a crescent shape. |