The Origami Forum

chesslo wrote:The model is symmetric, so if you do actions on one side then the same applies on the other side.

he's right though; unless you're familiar with the sequence, you wouldn't automatically assume that, except that there is the arrow in step 58 which indicates you're supposed to spread that layer, which you cannot do unless you make it symmetrical (otherwise it would come out as a simple reverse fold).

Good to know =)
I took a short break, I'll be back to the eagle soon

You can download a pdf of the book "liscense to fold" and there are instructions there. Its a diffiult fold.