A nice painting of a kite could be a landscape scene with a brightly colored kite flying high in the sky. The background could feature a clear blue sky, fluffy clouds, and perhaps a mountain or rolling hills in the distance. The kite itself could be painted with a range of vibrant colors, with long flowing tails trailing behind it in the wind. The painting could also include small details such as the kite string and the person holding onto it on the ground, gazing up at their soaring kite. The overall effect should be joyful and uplifting, capturing the sense of freedom and wonder that comes with flying a kite on a sunny day.