How to Deform Shadow Shapes?
With the free form Deformation tool in the Prop Key Editor, you can virtually match the square shadow object to most object shapes by adjusting its 9 control points.

Click the below video to see tutorial.

Adjusting Shadow Opacity
Different lighting conditions can give different shadow strengths. Adjusting proper shadow transparency can allow your objects to perfectly blend with the scene, giving realistic light settings to a 2D world.

Click the below video to see tutorial.

 
 
 
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