How to Use Photoshop Layer Comps
If you’re one of those designers who prefer to design within a single master PSD file, while still being able to reuse elements and see design variations, then you’ll find the Layer Comps feature of Photoshop particularly useful. For comparing different design variations, don’t waste your time remembering the different layer positions, visibility states, and layer style settings. Keep your workflow efficient and your file easily deciphered by your developer, client or project manager.