Staircase construction

I’ve been working on the staircase for a few days and got one started the stairs are all glued together made of foam core 3 layers each step and covered in granite contact paper.  The banisters are cake columns and painted white and the railings are guilt gold.  The ceilings are 14” so it’s a big staircase and a lot wider than normal .  It will be covered but you can see how I assembled it and all the rigging will be removed.  The railing is just stuck in there to see how it fits but not attached same with the columns. The space is bigger than expected so I will add a powder room under the staircase for guests.