I like it.
You could give it a little more punch by playing with the colors, here's a subtle edit to the hue and saturation of the blues:
This is one of my all-time favorites: I love the textures and the fade of the evening sky.
The way the first monk detaches from the scene is marvelous.
Is this based off any particular story? I'm interested to know more. It fascinates me what people can do with limited colors, too.
kudos