Tension-to-Shell is an investigation the design and fabrication of a lightweight natural fiber composite shell created through computational form-finding, design, and simulation tools. The project explores tensioned cotton fibers, anchored to a custom framework with specific boundary conditions, including an oculus opening, to achieve a stable, self-supporting structure. Using computational simulation tools, the structural behavior of the tensioned fibers is optimized for stability and efficiency. A natural hardening mixture of glue and flour is then applied, transforming the system into a rigid shell that can be removed from the framework to act as a standalone structure.