I actually stopped using it and attached it temporarily to my coop and run. The chickens lost interest in following me with the plate of treats, so now they go into it through a little door in the run part of my coop. I tried to attach a picture, but it doesn't seem to be working right now.
I like the two story concept and all the windows. It looks fantastic. I might suggest moving that dustbathing area to the run though. You may have already figured out that the whole inside of the coop will be covered in black dust from the wood ash. :-)
Again, great job and well thought out!