Chelsea Fan developed a double-sided rendering feature for mesh creation in the Autodesk/hydra-viewport-toolbox repository, focusing on enhancing 3D visualization for complex assets. She introduced a new 'doubleSided' parameter, defaulting to false, and implemented an enum to clarify usage while preserving backward compatibility. Working primarily in C++, Chelsea applied her expertise in 3D graphics, API design, and geometry processing to improve both rendering fidelity and API maintainability. Her approach ensured that both front and back faces of meshes could be rendered when needed, addressing visualization challenges and providing a more robust, flexible foundation for future mesh processing workflows.