Avoid unclear or jagged vector lines that might compromise the T-shirt design's clarity, eliminate any distortion that could disrupt the vector elements in the T-shirt print, ensure the vector textures are smooth and free from pixelation for a polished T-shirt design, carefully select color combinations that complement the T-shirt's overall aesthetic and avoid unnatural hues, maintain consistent vector shading to ensure a cohesive and realistic T-shirt print appearance, prevent blurriness in the vector lines and details for a clean T-shirt design, ensure the headphones' vector design is well-defined and doesn't suffer from any misshapen elements, watch for any vector noise that could detract from the T-shirt's visual quality, ensure a balance between vector depth and simplicity to avoid overwhelming the T-shirt design, avoid any unintentional vector artifacts that could disrupt the T-shirt print, ensure the cat's facial expression and body language are clear and expressive in the vecto