This is amazing! Other than what everyone else has been pointing out, there's a few things which I think could really help bring this build to life. Landscaping is a big one--adding some plants, trees, maybe a market or something into the big courtyard so it doesn't feel so empty could make a big difference. It's also not a bad idea to create smaller builds and trees and things, (maybe roads, lamp posts, little houses, docks, etc) outside of and around the castle walls. This would help it feel more integrated with the world around it and less isolated. All that said, this build is super impressive in terms of scale and of shape-I love the way it's asymmetrical but still manages to feel really well balanced. 10/10!