there's some pretty cool architecture going on here - could some more detail be added, such as the bridge, walls, garden area, and windows? pictures added for reference.
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thanks for adding the windows.
without any indication of what the terrain is like, or why there might need to be a bridge, the bridge looks very out of place. if terrain is out of the question, it might be best to simply have the bridge lead to a door that's lined up with the bottom of the building, instead of in the middle.
if the garden areas at either side of the bridge (south end) could be added, that would be great.