Create a vibrant landscape infused with bold colors and expressive brush strokes characteristic of Post-Impressionism. Imagine a serene countryside at twilight, where swirling skies blend with lush, exaggerated fields of wildflowers. The scene is alive with movement, featuring a quaint cottage nestled amidst rolling hills, while a distant river reflects the fiery hues of the setting sun, evoking a sense of wonder and tranquility.