I’ve mentioned this before in a post I think, but I really think farm plots and buildings need a graphical tie-in to the ground they sit on. Having a wall terminate into solid green grass looks ugly, as does the farm plot.
I propose that a “border” texture of the grass giving way to bare earth would make these edges look much more natural along walls, farm plots, roads etc. The occasional tuft of grass growing along the base of a wall would look great! (and that just moves on to more advanced stuff, like having creepers eventually grow up walls…)
And taking that idea further, I think it would be really cool if grass would automatically wear away with foot traffic. Using these “grass borders” and the bare earth tiles, gradually the main paths that citizens take would wear away, leading to natural pathways. This would help give your towns a lived in and unique look.