poster mock-up, concretism, concrete, minimalist, hyper realistic, 4k, 
poster mock-up, concretism, concrete, minimalist, hyper realistic, 4k, --v 4 --ar 2:3
poster mock-up
concretism, concrete, minimalist, hyper realistic, 4k,
an empty room with a poster on the wall
a large mirror in a concrete room
a poster of a concrete cube in front of a concrete wall
a large mirror in a concrete room