Hi! You move fast.
This is actually a great first at dungeon mapping. Though, I can't help with what is needed for the game in the map. I do feel the whole there is no single direction for light is catching my eye. Maybe try to have your cast shadows only on one side. This would actually give more depth than having it circumvent everything. Also, a touch of core shadows wouldn't hurt the walls.

I love the artsy touch of the objects on your map. This really is a good map.