Now you’re ready to set up both of your Photoshop documents for printing. (So that both documents print exactly in the middle of the page, it’s important to center each of them on a piece of paper measuring 8.5 by 11 inches.)
In Photoshop, center your CD cover document on an 8.5 by 11 canvas in landscape orientation:
> Select <Image>, then <Canvas Size>.
> Enter 11 for Width and 8.5 for Height.
> Click the center square on the Anchor.
> Click <OK>.
Repeat this process for the Photoshop file containing the inside document.