~~30 Units~~ ~Paper used is 2:3 ratio rectangle.~ You can find a tutorial on how to cut square paper into proper size for this kusudama here - ... A tutorial on how to make the Whirlpool kusudama designed by Ekaterina
by Arthur 3D origami
by onoy origami
by Oridin TV
by EasyCrafts DIY
by Sekedar Berbagi