For me, it is the horizontal shelves, they look like the are sloping down on the left, which I am guessing might be due to not being perfectly parallel to the shelf unit when taking the shot. That or you have crooked shelving I also really like the GCC0041, a very contemplative look. CGG0004, omg that is a cute cat, great shot, those Christmas lights really have a nice quality of light to them.I didn't realize how dirty my living room floor was. This photo is kind of strange, because it looks as if the tower tilts to the right. I swear I lined up the tower to the crop grid when I rotated it! I even tried it three times! I think the near-white highlight on the right side of the tower of blocks draws they eye and makes it appear tilted when it isn't.
Someone correct me if I'm wrong.