Illustrate a charming Quokka dressed in a whimsical pirate costume, complete with a tricorn hat, an eye patch, and a swashbuckling sword. The Quokka's fluffy fur is a warm, sandy brown, with a hint of reddish undertones, providing a plush, inviting texture. Its expressive perfecteyes, eyes twinkle mischievously beneath the shadow of the tricorn hat, adding a playful spark to the character. The pirate costume, adorned with intricate details like gold trim and a skull-and-crossbones emblem, fits the Quokka snugly, accentuating its adorable proportions. The Quokka strikes a dashing pose, one paw raised in a playful salute, as if ready to embark on a thrilling adventure across the high seas. The backdrop features a sun-kissed beach with palm trees swaying in the gentle breeze, setting the stage for a whimsical and lighthearted pirate escapade.