How I created an impressionist painting

One of my favourite impressionist painters is John Constable. I particularly love his paintings that depict the countryside. Here is my maiden attempt at turning a digital image into what I hope looks like an impressionist painting. 

The post processing technique used here is relatively simple. I increased the saturation on the original image, blended in a grunge background using Soft Light blend, then repeated with another layer of blending using Overlay blend with opacity reduced. Finally I "painted" in some lights and some shadows judiciously.