Much like the Land of the Jawa's Playset, these are scans of the four pieces of cardboard that can be printed out and glued to cardboard to create your own cardboard AT-AT. Unfortunately, I do not have the instructions for assembling this, but it is assembled basically in the same way as the Jawa Sandcrawler.
The size of each image (width by height in inches) is listed next to each file.
Support piece - 20.58" x 5.94"
Head - 8.37" x 7.47"
Body piece 1 - 13.46" x 10.79"
Body piece 2 - 17.09" x 14.55"