This thread is devoted to posts pertaining to Balmora/Hlaalu assets (clutter, buildings, and other details), both 2D and 3D. Some refrences are included, and I will see what I can do in contributing to this when I get to a computer that has photoshop on it.
Wall Clutter and graffiti art direction
Wall posters, graffiti, and other details will be helpful to add essential detail to otherwise plain walls. Things like adverts for local businesses and guilds/factions, Anti-Imperial posters and graffiti, and older, faded posts can help add to the immersion and help make the city feel lived in. Balmora is one of the older cities, and could benefit from having older, fading fragments to serve as evidence of age, like so:
Terracotta piping would be used to channel water off of the relatively flat Hlaalu roofs, especially with the somewhat common rain in the area. This picture by Lelek is a good example: