/ic/ - Artwork/Critique

This is hard, give advice pls. I already colored everything but it's still lacking something, I can't call it finished.
Perhaps it needs stronger shadows and way more colors...Yeah and I'll try to render the characters a bit more, they're too 2D.

Maybe I also need to add more stuff to the background, it feels too basic. MY CONQUEST IS A SEA OF CLOUDS THIS WON'T STOP ME AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA