The Qilin tattoo sketch refers to an artistic representation of the Chinese mythical creature known as the Qilin. Qilins are often depicted as having the body of a deer, head of a dragon, scales of a carp, and the tail of a cow. They are symbols of good luck, harmony, and wisdom in Chinese culture. The sketches can vary in style and detail, but generally, they capture the essence of the creature's elegance and mystical nature.