1.Resolution: 300 DPI or at least 1000 pixels; Color Mode: CMYK 2.File Formats: JPG, PNG, PSD, JPEG, etc. 3.Provide front and back (double-sided) design files 4.Full-bleed printing designs must include a 1.5mm bleed on each side;non-full-bleed designs should leave a 2mm transparent edge. 5.If semi-transparent effects are needed, please separate them into different layers.