Four different designs of patterned paper. each with the same design style, the lower left is a simple line drawings inspired by optical illusions, with grey lines. The lower right is an anime girl with dodgerblue hair and yellow-gold eyes. wearing a pink top with red heart on it. Waring a black heart necklace. The upper left drawing is design as many squares and triangles very colourful, all on a white background. The upper right one is with light grey background. circles on circles that colored with dark purple, violet, and medium purple. --cref <https://s.mj.run/0l6YZo64g8A> --niji 6