Maybe you should use a different texture for the castle because at stance it looks less like a real castle and more like a computer trying to make a castle. It's a really pebly texture. Also, try to get more volumetric clouds by using multiple layers, 'cuz Bryce seems to like flat clouds (I do a lot of sky images, so i usually make a volumetric slab and stretch it waaay out. I relly like the eagle and the landscape,: the foliage looks pretty darn real.