I've no idea how I call this. But what I want to do is create a graphic stack it on top of a duplicate. Like a pile of papers. Now I want to give each graphic (or paper) a border which will cut out on the layer below. I've tried to create an image that would explain what I'm trying to do.
Image 1: is the object with the 'cut away space (green) for the below image'
Image 2: duplicated objects
Image 3: the top object will 'cut away' on the bottom one
Image 4: should be the intended result
On a white background this is easily done with a white border around the object. See image 4, but what I need is that all that is white is transparent.
Any ideas or suggestions?