With his dog Annie in tow, artist Patrick Nagatani puts one of his pieces against a wall at the Downtown gallery 516 Arts, which on Saturday opens a major show of Nagatani's work, titled "Confessions of a Tapist." The photographs layered in masking tape show the evolution of a technique Nagatani has worked with for 25 years. The large-format images range from Frankenstein to Eastern religious figures to vintage Southwest postcards.