Wall panels for garden railway model buildings

I am in garden railways and like to create my buildings out of concrete. I created these 3D panels from which I create a silicone mold and cast the panels from concrete. I am right in the beginning of the process, have not even 3D printed some of the designs and only have a few panels cast so far. You will see all of them in the attached pictures. I will keep updating this thing when new models become available.
Each panel is 11x11 cm in dimension, v1 is 7 mm thick, v2 is 10 mm thick (that is t