chrisdesign
Just to illustrate one major advantage of using PixelSquid is casting a relative sharp shadow of a person or object.
Most of us (I now I do) make a copy of that person/object and drag the shadow layer beneath the person/object layer.
We make it black (or color as wished), bring it horizontal and start transforming/skewing/warping and blurring ect.. to make the shadow fit.
Depending on from where the lightsource comes and the position of the person/object, making a copy of it doesn't reflect reality.
The red arrow shows where the light is coming from.
Actually this is not the shadow that lightsource would project.
Rotating the person/object shadow-copy to the front of the lightsource gives a realistic casted shadow.
Just a thought.