castle needs some paintover

[Creatisity]

okay guys, this is my first fantasy digital art painting.. i havent done any complete digital art paintings yet (i mostly did mixed media or i copied a photograph)
and i am very aware of the fact that this piece needs some paintover even though i see it as finished one, i know there is lots of things that need to get fixed. i sadly dont know how to turn my weak points into good ones, thats why im asking for your help :)
in the middle of the process i have had gotten a paintover by toxicpanda who helped me a lot with my huge coloring issues but im still asking for more critique on this one
thanks already