There isn't a whole lot to do in this map. I mean you are in the labyrinth and you set up your economy and you're done. You are surrounded by too much natural defense, if that's possible, all you need a gatehouse and maybe a round tower and you're done.
The balance is alright. It was balanced enough for someone to play on and have some fun. Not a lot to say in this part of the review.
This seems very unfair but I give you a 2. This is because there is a water fall that feeds the labyrinth. Where does the water all go when the last wall is completed? It can't just sit there you should have talked about that in the story. You didn't add any shrubs or any kind of texture to the land, either. No grass or dirt. You need to use what is available to you.
My explanation already explained in the Creativity Category.
You had a clever idea with the river. However with all of this, you have a responsibility. You should have made lowered walls or something to show that it was impossible for the water to flood over easily. You should have shown erosion on the corners by placing rocks and using the beach tool.