Creating a vector design featuring koi fish swimming in a tranquil pond begins with sketching out the basic composition. First, I outline the shape of the pond and position the koi fish elegantly within it. Then, I focus on adding details, such as the delicate patterns on the fish's scales and the ripples in the water. Selecting a vibrant color palette brings the scene to life, while paying attention to shading and highlights adds depth and dimension. Finally, refining the design by adjusting curves and lines ensures a harmonious balance between realism and artistic expression.