Amazing sketches!
Could you do a desert city? Desert as in mostly rocky. Climate is hot in the day, cool at night. Rain is very rare, the city relies on underground rivers and dug wells.
Large buildings are stacked cut stone, the buildings are broad and flat. Two floors maybe, three only for the very prestigious. Roofs are sheet metal, leather or weatherproofed fabric
Most domestic dwellings have two or three stone walls to provide a windbreak, with the rest of the walls and the roofs again of leather or canvas. Nearly all furniture is metal frames and leather/canvas surfaces. They also use woven baskets.
The society has very little wood as trees rarely grow to a substantial size in the dry environment; but there's an abundance of rock and the people are very good metalworkers. Semi-precious stones are very commonplace; wood is a luxury material. The city is nestled between rocky mountains in the far distance. Farmland is very carefully and extensively irrigated to make the best use of underground water sources. Crops are mostly grains and fodder. The main farm animals are poultry and a woolly animal like a cross between a sheep and a llama (tall sheep/short llama!).
The people have a caramel/golden coloured skin (kinda light arab) and are tall with long limbs. Traditional clothing is made of large sheets of thin fabric draped over and strapped to the body with strips of contrasting fabric, but more familiar robes/skirts/shirts/trousers are worn too - mostly loose and flowing. Both sexes loosely cover their heads with scarves or hats to provide protection from the sun.
Everyone wears an identifying necklace with a point-down triangle of beads which provides information about who they are and their family back to grandparents (communities are very small, it's important not to get with anyone with a matching family member on their necklace!) On a similar theme, language isn't written, but encoded with rows of beads (kinda a bit like Braille). For example, a craftsman's sign may be displayed as a big rope of beads. Dyes are very rare and expensive so everything is natural sandy/dusty colours, with occasional flashes from stones like jade or jasper or metals like copper and bronze.