Great scene!
What I like most (second to the waterfall of course) are the different heights. Potential for interesting combat scenarios.
That wall actually fits nicely with the bridge
Gives a sort of "ruins" vibe. I'd merge it even more into the landscape with a broken tower or two and some hills that merge with the wall! Might also give your map a purpose as you could build a makeshift camp in between the ruins (brainstorming out loud here).
Also, don't hesitate filling it up, not with actual set content but just decoration. The vegetation around the paths is great and in a top-down perspective people often expect every corner of the screen to be decorated. They'll often be able to fill it with playable content like encounters etc. themselves as they get inspired by the surrounding potential (which this map certainly has).
