Nice map! My advice is to desaturate the colours...they are quite loud, especially the roofs of the houses. The fields are also very bright .... do have a look online at colour tutorials, whether it's fantasy or reality, having a consistent colour pallete really helps. A quick fix would be just to layer a colour on top of the entire map and lower the transparency. Noise is also a great way to add texture. I've had a play and it's by no means perfect but this is sort of what I mean