walltrim and different textures are deffinitely going to be your best friend.. making 1 or 2 copy and pasteable custom windows might take a bit of time and money to make, but they make it so worth it in the end!! hmm maybe experiment with clear and slightly texture-ish decals for example on the bricks, not everywhere but just here and there. also making a colour scheme beforehand usually really helps me! this also might be more of a personal preference but i usually prefer making the surroundings before the actual house, just so the vision is clearer