Lovely image, my favourite. Did you try though cropping the bush out from the left? Also cropping up to half the foreground to place even more emphasis on the stunning sky and interest in the horizon.
Beautiful! The sun rays coming through the clouds is wonderful. The bird is icing on the cake even if it may be photoshopped in, this is still a moving image. I might have cropped out the tree on the left, just my opinion.