In La Fée du Rocher Pl.4, vibrant colors dominate the scene, showcasing a fairy amidst a lush, fantastical landscape. The figure of the fairy is elegantly posed, with flowing garments that blend harmoniously with the surrounding flora. Rich greens and soft pastels create a dreamlike atmosphere, inviting the viewer into a whimsical world.

The overall composition is lively, reflecting the playful spirit of the Art Nouveau movement. This artwork is a lithograph, a popular medium for posters in the late 19th century, allowing for vibrant color reproduction. The intricate details of the fairy's attire and the surrounding environment are rendered with precision, showcasing Chéret's skill in design and composition. The poster format emphasizes the decorative qualities of the piece, making it suitable for public display.

Viewers can appreciate the combination of artistic flair and commercial appeal that defines Chéret's work. Jules Chéret was a prominent French artist known for his contributions to the poster art movement, particularly in the Art Nouveau style. La Fée du Rocher Pl.4 exemplifies his ability to merge art with advertising, capturing the essence of beauty and fantasy. Interestingly, Chéret was often referred to as the 'father of the modern poster' for his innovative techniques and vibrant designs.

His work not only influenced advertising but also shaped the visual culture of the late 19th century.