Welcome to epz Neil - I'm sure you'll enjoy it.
I'm going out on a limb here in that by reading your intro, you seem up for some feedback and I appreciate that myself so...
I think the comp and the square crop have a lot going for them. The group of cows bottom left ads balance, the tree has some interest in it and the position of the curve of the hills works well.
I think you could maybe colour balance the shot a little warmer to remove some of the blue cast and apply some curves adjustment to help cut through the background haze by increasing contrast in the trees on the hill. Using a grad filter to retain some more detail in the sky or shooting two exposures and merging them would help too.
I don't mean any of this as negative though - just views and observations of the kind that I appreciated when I was starting and the important thing's to keep enjoying it.