Hello, what a great artwork ! I find nothing to say on the line art or hatching. But I have an issue with the shadows : You have really strong pitch dark cast shadow from the trees and rock but they are all from different angles. Also that strong shadow should appear on your figures (both cast and form shadows) I choose to be heavy in my paint over, you might want to lighten them with some bounce light coming from the floor. I hope it helps.
Oh yeah you are right, thanks the paintover looks great!