I think you should decrease your FOV (50 or 60) and increase your pano window.
There is a sort of watermark or maybe dust in your camera, in the first pano, you can see it on the wall like a "J".
Under the heater, in the first pano, there is a white rest of something on the floor...
And last but not least : you should have your own custom cursor
But your visit is very good, I found your drop down thumbnails very good I'll try to copy you tomorrow
(I found what makes your panorama not realistic : everything in the house is too clean and ordered, I would have it like that at home....)