Specifying more specific details:

Ensuring rich detailing on the dragon boat, such as intricate golden decorations and vibrant paintings: "Please ensure the dragon boat is depicted with elaborate golden embellishments and vivid paintings."
Clear visibility of facial features and capturing natural and lively expressions of the characters: "The characters' facial features should be clearly visible, with natural and lively expressions."
Introducing emotions and mood vocabulary:

Portraying the characters' joy and excitement: "Please depict the characters' emotions of joy and excitement."
Bright and happy smiles on the characters' faces: "The characters should have bright and joyful smiles."