Firstly welcome to the forum. In my experience other users here seem to all be house trained, so it's a useful place to come for constructive criticism. Your picture has much to commend it; good exposure, great colours, good use of the rule of thirds. However, the last aspect isn't enough as the rest of the composition does let the image down somewhat because the sheep have been placed right in the middle of the frame - something usually only done when trying to make a strong compositional statement. In this picture all the interesting stuff is happening in the middle with the sheep, and to the right with the mist-filled valley and the trees emerging from the mist. Cropping the left side of the image close to the sheep, perhaps somewhere near the right-hand end of the line of trees in the distance, will improve the image hugely and it will add polish to your gem of a picture.