I have 4 rotating pictures and each time they rotate I want one of them to be on top of the rest but yet the corners of the others to be visible underneath. Is there a way I can do this as it seems only the first one will be on top obviously because it's top in the layers
In PPro, you will need to stack sections of your clips on different layers to get them into the order you want. Use the razor tool as necessary to cut clips into sections so you can manipulate the order.
Alternatively, if you have After Effects, assign them to 3D layers and do the job properly.