The impact of this photo comes first and foremost from magnificent colours from the sky. They appear strong yet natural - well done on not increasing contrast to the extreme as many for some reason like to do. Otherwise, it's a nice general composition, and a nice landscape with good detail.

My criticism is mostly related to darker parts of your landscape. The horizon line, and especially the left and right edges are very dark and it is distracting as soon as you notice that. It is however very easy to dodge them in photoshop. I don't really have anything else to criticise. If I have to be absolutely picky, you could clone out the top of the bush in the middle foreground, as it crosses the tiny road. But that's really minor. Good landscape!