Create a whimsical and charming scene featuring a quokka dressed in a cowboy costume, complete with a tiny hat and a fringed vest, joyfully riding atop a fluffy alpaca through a sun-drenched meadow. The quokka's adorable, smiling face exudes pure delight and mischief, contrasting beautifully with the stoic demeanor of the alpaca as it gracefully carries its unusual rider. The meadow is alive with vibrant wildflowers in shades of purple, yellow, and pink, swaying gently in the warm breeze. The golden sunlight bathes the scene in a soft, ethereal glow, casting long, inviting shadows across the lush grass. The quokka's cowboy hat bobs playfully on its head, adding a touch of whimsy to this delightful tableau.