This is a variation of the Christmas Tree created by Vincente Dolz. The units are folded the same way as the original tree but the units are assembled in a slightly different manner to give a totally different look.
Original tree (left) and variation (right):
The instructions for making the variation is different in steps 16 and 17. Instead of stacking the units in staggered orientation, stack them one on top of the other with each one the same orientation as the one below.