This is how I sent mine to Chris...in the mail.
http://www.papermodelers.com/forum/155118-post116.html
This is how they arrived...in various pics you can see the models I sent.
http://www.papermodelers.com/forum/155607-post123.html
I had also sent this 'ol bird in much the same manner:
1/48 OP-2E Neptune US Navy Paper Model - ECardmodels.com Shop - Downloadable models and crafts for
Since it was large, I removed the vertical tail, but it suffered slight damage...the nose cone fell off during shipment.