Unicorn by
Baltorigamist, on Flickr
Narwhal by
Baltorigamist, on Flickr
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Gene ->
Those numbers are the reference points for the main flaps on the model.
Place the square in Quadrant I of a graph (+,+) with the lower left corner on the origin. The opposite corner is at (1,1).
Measure and mark the points I listed {(0,0.35356); (0,0.70711) and (1,0.26588); (1,0.73412)]. Mirror them over to the other side over the line of symmetry, and you have all the basic creases for folding the base.