1. A printing apparatus comprising: a first part of nozzles that ejects at least one of brilliant ink and white ink to a medium; a second part of nozzles that ejects color ink to the medium; and a control unit that forms a first image by the first part of nozzles and forms a second image on the first image by the second part of nozzles, and deforms, when a part of an edge of the first image and a part of an edge of the second image are overlapped before forming the image on the medium, at least one of the first image and the second image so that a portion of the overlapped edge in the second image is positioned outside a portion of the overlapped edge in the first image.