Yeah, check out the card modeling FAQ here:
http://www.cardfaq.org/faq/
There are some folks who do some pretty sophisticated stuff with card models.
I downloaded the Morane Bullet WWI fighter from Fiddler's Green's web site (http://www.fiddlersgreen.net/), reduced it in Photoshop to 1/144 scale and glued it together. I even rigged it with stretched sprue.
I've bought and downloaded two more of their WWI fighters and plan to do the same thing.
Regards,