Embarking on the journey of origami, you've mastered the basics and now yearn for more. Welcome to the advanced realm of paper folding, where intricate designs and complex structures await. This tutorial will guide you through the art of creating advanced origami models, enhancing your skills, and expanding your creative horizons.

Before delving into the advanced techniques, ensure you're comfortable with the fundamental folds: valley folds (mountain folds), squash folds, and reverse folds. These form the foundation upon which complex origami structures are built.

Advanced Origami Techniques
The heart of advanced origami lies in mastering new techniques. Familiarize yourself with the following:

1. **Pleating**: This involves creating multiple parallel folds, often used to create intricate patterns and textures. Start with simple pleats, then progress to fish-pleats and sink-pleats for added complexity.
Pleating Basics

Begin by folding a simple pleat. Hold the paper at one end, fold it in half, then unfold it slightly. Fold it again, creasing well, and unfold it completely. You should see a crease line down the center. Repeat this process, moving your starting point each time, to create multiple parallel creases.
For fish-pleats, start with a simple pleat, then fold the paper in half horizontally. Unfold, then fold it back on itself, following the crease lines. For sink-pleats, follow the same initial steps, but instead of folding back on itself, tuck one side into the other, creating a sink-like effect.
Pleating Patterns

Experiment with different pleating patterns to create unique textures. Try combining simple pleats with fish-pleats or sink-pleats to create interesting designs. Remember, practice makes perfect, so don't hesitate to try and retry until you achieve the desired result.
2. **Tessellations**: These are complex, geometric patterns created by folding and interlocking multiple units. They require patience and precision but result in stunning, intricate designs.
Tessellation Units

Start with simple tessellation units like the 'square twist' or the 'fish base'. These units can be interlocked to create larger patterns. Practice creating these units until you're comfortable with the process.
Once you've mastered the basics, explore more complex units like the 'sonobe unit' or the 'honeycomb unit'. These can be used to create intricate, 3D tessellations.




















Tessellation Designs
Begin with simple tessellation designs, like the 'honeycomb' or the 'hexagonal' pattern. As your skills improve, challenge yourself with more complex designs, such as the 'staggered' or 'offset' patterns.
Remember, tessellations require precise folding and interlocking. Take your time, and don't be discouraged if your first attempts aren't perfect. With practice, you'll create stunning, intricate tessellations.
Advanced Origami Models
Now that you've mastered the advanced techniques, it's time to apply them to create intricate origami models.
1. **Modular Origami**: This involves creating multiple, identical units that are then assembled to form a larger structure. It's a great way to practice your precision folding skills and create complex models.
Modular Origami Units
Start with simple modular units like the 'crane base' or the 'boat base'. These can be used to create a variety of models, from boxes to animals. As your skills improve, try more complex units like the 'tetrahedron' or the 'dodecahedron'.
Remember, modular origami requires precise folding and assembly. Take your time with each unit, ensuring it's folded correctly before assembly.
Modular Origami Structures
Begin with simple modular structures, like the 'crane box' or the 'tetrahedral box'. As your skills improve, challenge yourself with more complex structures, such as the 'dodecahedron' or the 'icosahedron'.
Don't be afraid to experiment with different unit combinations to create unique, custom structures.
Advanced origami is a journey of exploration and discovery. Embrace the process, learn from your mistakes, and celebrate your achievements. The origami community is vast and welcoming, so don't hesitate to seek inspiration and advice from fellow folders.
So, grab your paper, sharpen your crease-pliers, and dive into the world of advanced origami. The intricate, beautiful models you'll create are testament to your dedication and skill. Happy folding!