Design of the Stone Portal

The buyer gave me the size of the walls, the technical passport of the ball and the ventilation solutions. And also a photo of the stone portal from marble, which he liked. The task consisted in designing a 3D model for a better visual perception of the stone portal with the development of further detailing for production. And also a schematic explanation of the stages and principles of drawing a stone portal on the object. There is only a part of the robots.