Prompt:

Boy and dog, signature strokes, black lines, white background, intermittent black lines, simple line drawing, vector illustration, flat design, white background, colored lines, graffiti style, simple coloring. --ar 2:3 --v 6.1

男孩和狗，签名字迹，黑色线条，白色背景，间歇性的黑色线条，简单的线条画，矢量插图，平面设计，白色背景，彩色线条，涂鸦风格，简单上色。