If by "proper paper" you meant the digital assets required for a PS3 .pkg installation to show up correctly on the XMB: : 320x176 pixels (standard) or up to 512x512. PIC1.PNG (Background) : 1920x1080 pixels.
Since "SLUS21059" is the NTSC-U/C (North American) version, you can find high-resolution scans and templates at: Tekken 5 [PS2 Classics] [SLUS21059].pkg
: Offers retail and custom covers specifically for Tekken 5. If by "proper paper" you meant the digital