Just some (hopefully helpful) criticism.
The boards used to texture the church and general store appear to be a bit larger than they should be.
Perhaps tiling the texture would resolve this.
I have also found a pic that I had on my computer for just such an occasion. A bank!
The image is taken from a Alias: Smith and Jones, an old western TV show that can be found on
hulu if you want to reference any of the locales.
Also, if the stage-coach is meant to be a prop, you might consider rotating one or several of the wheels so that they are not all perfectly in the same rotation.
Great stuff!