That's my floor texture.
That's my main wall texture.
That's my secondary wall texture.
That's my sky/roof texture.
Here is the rendered 3D view of my textures, we still didn't learn how to do lighting so it is pretty dark and the texture of the walls and the sky can't be seen. Also I didn't tile the floor yet, so I need to tile it on photoshop and put it back on Maya.
To make it easier to see I took a snapshot of the screen, and you can see that my textures are in place and in their respective levels/layers. The sky is two grid squares on top of the floor, the walls are 2 grid squares high, and the floor is on grid square wide. Non of the textures have depth, so the floors have no height, the walls have no depth and the sky also.