Nuke Basic Compositing Part 1.1

For the reflection map or sIBL images you can get it here.

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Note: The Transform needs be after Shuffle Copy or after Premult in order to move the roto with channel. 

Wrong

The result of wrong placement of Transform

Right Placement of the Transform node. 

Right and I moved the mountain:)

Note: Always add (color correct, satuartion) after Premult. Otherwise it will colour correct it with the black colour. 

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Two Add more alpha into image

Here the alpha has not made a hole in the ear lobe.

To make a hole in the ear. You click on the tiny color wheel in Roto root.

Change the color of the A channel to black. Then you have a hole in the ear.