: Always set your PSD file to 300 DPI (Dots Per Inch) . Lower resolutions will result in pixelated or blurry prints.
Use Photoshop's Guide Layout feature ( View > Guides > New Guide Layout ) to place a vertical guide exactly at to mark the center seam. Add additional guides for your margins and safe zones. Step 2: Structuring Your Layers for Efficiency
: Always set to 300 Pixels/Inch (DPI) . Lower resolutions cause pixelation during print.
Height: 12.25 inches (12 inches for the page + 0.25 inches for bleed).