Tannery leach house - start

I decided to start with the leach house as the first tannery structure.  I had some plaster rough brick wall sections I bought from Downtown deco so I cut up one into 3 walls, and in the front wall I cut three window openings.  I am using three 60 x 120 inch Grandt windows.  The 4th wall in the back will not be visible after all buildings are completed so that wall will have no detail.

So far so good.