Learn to create a complex origami Christmas tree with a crane on top in this 25-minute tutorial. Follow step-by-step instructions to fold a clean-looking flat pine tree from a single square sheet of paper. Master advanced techniques like open sink folds on the tree's sides. Suitable for intermediate to advanced origami enthusiasts, this project uses a 15cm x 15cm origami paper (demonstrated with 24cm x 24cm for clarity). Progress through various stages including forming tree levels, shaping sides, locking the structure, and crafting the intricate tsuru crane topper. Enhance your paper folding skills while creating a unique holiday decoration.