Open the file in Photoshop. Find and right click the layer called ‘Edit me and save' and hit ’Edit Contents’. This opens a Smart Object. Inside this Smart Object there are five layers, representing each screenshot. Create your artwork inside each of these layers. When you’re done editing, save and close the Smart Object. The multiple sizes in the main PSD file will automatically be rendered. Use the Photoshop Actions bundled with the resource to export your screenshot files.