Learn how to create a stunning origami Christmas tree from a single sheet of paper in this 21-minute tutorial. Follow step-by-step instructions to craft a clean-looking flat origami pine tree with a star on top, designed by Jo Nakashima. Master advanced techniques like open sink folds to achieve a stable, upright tree shape. Choose between a simpler version or challenge yourself with intermediate-level folding for a more refined result. Use a 15cm x 15cm origami paper and progress through various stages including tree levels, side shaping, and adding the finishing star. Perfect for holiday decorations or as a unique handmade gift.