Create a realistic romantic couple portrait

Create a realistic romantic couple photo of the two people walking barefoot along a beach during golden hour. They are holding hands and looking at each other naturally. Add warm sunlight, gentle waves, wind-blown hair, soft shadows and cinematic depth of field. 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.