Websites like CAWs.ws and Reddit host long-running threads where users share high-resolution printable files. Printing Recommendations To get a professional look that fits standard game cases:
For unique or region-free "clean" looks, artists on DeviantArt have created specific templates and custom covers featuring superstars like Ultimate Warrior , CM Punk , and even custom templates to make your own. WWE 2K15 [Region Free][ISO]
If you are looking for printable cover art ("paper") for a backup, you can find official and custom designs to print and insert into your game case. Printable Cover Art & Templates Websites like CAWs