I like the way the light shines in a lot. Though honestly I'm not a fan of having three tile walls. Also, the wall outside looks too small compared to the inside, I recommend making them the same size, or atleast making the brick wall bigger then the inside one. Other then that, I recommend you make the map smaller, it has way too many unnecessary empty space. Maybe add some decoration to it to give a feeling it's a proper hallway? Like tables or iron statues?