Rice Fields 3D metal sculpture - under 4" deep

19' h x 14' h sections no bigger than 4' x 6' or smaller - no more than 3 layers on the field sections. Top half to be flat distant mountains.
Will need to convert concept to DXF files.
Terracing of rice fields to roll up to 3 levels and back down to keep depth of sculpture under 4".
Sculpture to be painted after manufactured so colors need to be decided on.