Create an image of a bold sunflower-like helianthus flower in full bloom, standing tall in an expansive prairie landscape during late afternoon. The helianthus should have bright yellow petals radiating from a dark brown center, with a sturdy green stem and leaves. The prairie landscape should be bathed in warm, golden light, with tall grasses and other wildflowers stretching out towards the horizon. The scene includes a softly undulating terrain and a distant silhouette of a windmill. Use a modern, expressive digital art style to highlight the vibrant colors and dynamic energy of the scene. The angle should be a slightly low, upward perspective, emphasizing the height and brilliance of the helianthus against the vast prairie sky.