Use 30 square and 60 mini square sheets of origami paper.
Difficulty : ⭐⭐⭐
Time: 4 hours
 
Vacuum contract petal to the center.
 
Model paper size: 
Unit (green) : 7.5 cm x 7.5 cm 
Joint (green) : 1.875 cm x 1.875 cm
 
Model height: ~ 9 cm
 
PrwOrigami - Kusudama Collection
www.prworigami.com
(March, 2019)