This is the size after my research. about the upper size, I do it for 16.3cm,
but still little bit small, not actually fit. so if you guys want real fit, I think this size will do.
this is juz the sample if your put the background card into the case something look like it.


Here some of the printing and finished cut look like. the upper pic is original Issue 5 card,
the below is my DIY. Thanks for the "Google" searching high resolution picture.

For the picture you can try imagine yourself for it, can be 3D graphic, illus,
realistic photo, etc... it really interesting after putting in the case.
by the way, is better using the card quality paper for it.

First I must sorry about the photo, cuz my DSLR skill no good at all,
so it juz focus on my tank, background card become blur...
but if it look by own eyes is really look interesting I swear.

the upper is the background I use, the lower is after putting it in.
hope you guys enjoy it, dun shoot me ya... LOL...

here the all my collection again with background.

This is the sample of all my background card have done.
note: this is not for printing use, just sample only.


Click the link below to the download:
http://cloudstor.es/file/Qs_RL/

After download, unrar the file you will get PDF files.
use Adobe Reader to open the PDF file.
If don't have it, go here to download (Free):
http://get.adobe.com/reader/

When you open the PDF file at the Print section,
first make sure the Printer --> Properties inside the paper size is "A4".
after that Page Sizing & Handling set to "Size" then choose "Actual size".
make Orientation: "Portrait" for safety.
if not so sure make Page Setup below to "A4" too. all done, Print it~

Note: is recommended to use Card quality paper to get better visual.