Create a stylized landscape of the Antelope Valley at sunset with a focus on Joshua trees and California poppies. The artwork should utilize flat colors with a sunset palette--rich oranges, purples, and reds--evoking the warm glow of the setting sun. Incorporate bold outlines and a playful design to capture the whimsical essence of the valley, similar to the provided art style reference. The Joshua trees should stand tall, their silhouettes highlighted against the sky, while the ground should be ablaze with the vibrant red and orange hues of poppies, all set in a minimalistic yet expressive composition --ar 16:9