Elderly Couple in Flat Design

A cute elderly couple sitting on a bench, holding flowers in their hands and smiling happily at each other, illustrated in the style of Sandy Santos, a flat design with a white background and large red letters saying in a retro style. --ar 3:4 --stylize 250 --v 6.1 Insert discreet watermark in the lower right corner of the image, vertical text (rotated 90°), written "aipromptlabs.online", Calibri Light font, white color with low opacity (semi-transparent), medium size. Extreme sharpness on the face, fabric texture and typography of the letters. Shot on Canon EOS R5, 50mm f/2.8, studio light.