This design oddly reminds me of this, only better.

I don't know, this structure looks too boring/monotonous. Unless that's what you were aiming for, I'd suggest spicing it up a little, for example, use other tiles to differentiate the floor from the walls. Also, try to add some detail like carvings on the walls, or ornamental columns, etc... Also, what's with those colored flames? They look real silly next to such drab building. =P

Oh, right, those are pillars. I thought the ones at the top were tables, because you can only see the upper half of them. They seem to be too small to be pillars. Besides, what are they supporting? Or are they purely ornamental? ...In any case, what I had in mind was something like this: Link so your building look less 'boxy' and more interesting.

Also, you should update the screen every time you can, otherwise people will never know what can or cannot to be commented on.

You're very good with details. You don't need to change anything about them.

The building is constructed incorrectly, though.