Learn to create a no-glue origami Christmas tree in this 12-minute tutorial video. Follow step-by-step instructions to fold multiple green paper squares of decreasing sizes (20cm, 15cm, 10cm, 7cm) for the tree layers and a 15cm brown square for the trunk. Master techniques like inside reverse-folds, open sinks, and creating a square base. Discover how to stack the units without adhesive for a charming 3D effect. Finish with an optional omega star topper. Suitable for beginners, this project offers a festive, eco-friendly decoration perfect for holiday crafting.