Now that we have our layer set we can start making the snapshot. The snapshot will be made up of two layers. One layer will hold the snapshot image, the other layer is the white backing of the snapshot. We'll make the white backing first.
To create a layer for the white backing, hold down the (PC: Alt, Mac: Option) key while clicking on the New Layer Button in the Layers Palette. When the New Layer dialog opens, enter "Backing" for the layer name.