An AI-generated tattoo project, this mermaid sketch investigates a black and grey palette with fine line tattoo precision. The central figure is a flowing mermaid rendered in delicate contours that define the torso, hair, and fins, while a dense scale pattern animates the tail from hip to fin. The composition favors a clean silhouette and restrained shading, making it a versatile tattoo design suitable for small tattoos and expandable forearm, shoulder, or back pieces. Graphite-like shading provides a tactile texture that translates well into ink, preserving crisp line work and readability when applied to skin. The scale pattern introduces rhythm and surface detail, offering opportunities to blend with floral elements such as lotus flower tattoo or rose tattoo design motifs, or to merge with Japanese style tattoo influences, resulting in smooth transitions and balanced negative space. This study participates in the broader vocabulary of tattoo design, highlighting fine line technique, black and grey realism, and pattern-driven composition that remains legible at different sizes. It also invites adaptation for infinity motifs or tribal accents to connect with existing tattoos, creating a cohesive narrative across a sleeve or body art continuum. As an AI-generated tattoo project, it demonstrates how a sketch can evolve into a refined, cohesive piece with emphasis on line weight, shading, and pattern play that deliver texture without overwhelming the silhouette. The piece serves as a robust foundation for a custom tattoo design, with modular elements that can be isolated or extended to fit the wearer, ensuring the final tattoo reads clearly as ink and stands the test of time.