To be honest it's a little boring. There are some good references on how to balance your image composition...The castle could be better positioned. There is also a lack of detail. The Castle isn't interesting....give it some zing, some minute detail, maybe flags waving or more towers and bridges. The mountains have snow, but they need contrasting crags...perhaps you could change the lighting and make it more dramatic with the sun turning some of the turrets and ramparts bright gold. Painter X has some guidelines you can bring up to help you place your key objects in places that will help your composition.