How does wearing the sash help walnut win the contests in sees behind trees contest?

In "Sees Behind Trees," wearing the sash symbolizes Walnut's unique identity and connection to her abilities. The sash not only boosts her confidence but also serves as a reminder of her determination and the support from her peers. This empowerment helps her to embrace her talents and ultimately Excel in the contests, showcasing her strengths in a way that resonates with the judges and her audience.