Screen 1: Too much of that wood texture, doesn't fit on the outside walls. The structure thing there looks too simplistic, try replacing it with a sheet metal shed type thing. Also the room doesn't seem to be built with the intel in mind at all, I had to take several looks at the screenshot to actually notice it.
Screen 2&3 : Just, empty. Put more stuff, vary it up. That lightbulb in screen 3 makes no sense in it's current state.