If you do Jax you must use only D's in your title!!!! Like what you got so far tilt not much to suggest. Maybe divisions along the wall section to show that its made from pavers/bricks? Or thickening the wall section to make it more realistic for shoring up the walls. Also if it begins to be too dark i suggest a mask on the dirt section on the outside of your walls and a new layer with something lighter in that same region that was masked out. Hoping to see something legen....dare I say it.....dary!!! That's right legendary! Haha