Lots more detail!
Starting with the foliage - I have intensified the foliage on the right and added some darker values at the bottom to indicate shadows. Pine trees are now growing around the silo. I am not really a fan of green trees so you can probably see some orange and purple in the branches.
The silo has some contours on the top and the base and I have added the window and eaves on the barn. Often architectural element can be emphasized just by adding the shadows they cast. The barn board effect was achieved with dry brush.
I have added a more intense wash to the foreground and added a bit of texture to the field.
Things are starting to pop!