I'm not an expert in iso, but it would seem that the other railing is a bit out of perspective. Also the outer AA makes it a tad unreadable, so I would remove it on a transparent background.

http://i200.photobucket.com/albums/aa45/b000t/isotestman.png

 Nice colors and brickwork. Unless you're done with this project, you should maybe perk it up with a tad of "environment" like a sidewalk and streetlamp in front or dumpster behind the building.

Overall very pleasing to the eye. :)

not bad, great colors though

xactly what smk said.

Door is messed up really badly -o-;;

 Any tips on how to fix those stairs? I've been struggling with them. :I

The stairs are messed up and the roof is boring. The windows are nice, bricks ain't bad, and the door is too small, or too big, depending on how big a human would be. Okay that was absurdly said, anyway what I mean, the door is somehow very weirdly placed.

nice work :3