The 2007 and 2008 versions are actually the same (the 2008 version is the 2007 version). The earlier version you are thinking of is the 2006 version, which is varied significantly. I don't know what difference you are trying to point out here, but I don't see it.
07 and 08 ARE NOT the same.
Especially for you i post images to show:
This guy is a 2007 version
And this is 2008. Well i can see the difference. M?? And 2008 CP contains two creases less Look more careful
So. i ask once again others: if the CP's are almost identical, how the heads of eagles are shaped in different ways?
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I guess this flap is inside the head and he just pulled it out to make a more impressive eye. You don't need to change the CP for things like this.
I know a CP you can make several things of, for example a human, a rose stem or a lizard, just depending on how you shape it. Still its all made from the same CP. Look at the last page of this guide to find it: http://www.origamiaustria.at/diagrams/b ... uide_3.pdf