Library + Video of postproduction ( Critics please )

My latest work (Critics are welcome )
Blender (Cycles) . Gimp
i want a general critics that can help me in future works

good resolution :
http://www.flickr.com/photos/[email protected]/10572589655/sizes/o/in/photostream/


i modified the floor in the first is so big
http://www.flickr.com/photos/[email protected]/10579827505/sizes/o/in/photostream/