Photoshop Instructions
Double-click the layer named 'Edit me and save'. This opens a Smart Object. Create your artwork in the designated 5 layer folders. The contents of each folder represents each layer in the parallax. You don’t need to put content into every layer, but it will spit out an empty PNG file that you’ll then need to delete. After saving the Smart Object, the multiple sizes in the main PSD file will automatically be rendered.