From a beginner(myself) -
I like the first shot, though i think the carpet is a bit distracting. I think if perhaps you cropped the over exposed white carpet part at the bottom out it may make a positive difference.
For the second one, the colour of the cat seems a little off. It looks like the couch reflected onto the cat or something when you took the picture.
The last one i also like, but again i think if you got rid of some of the background by cropping it perhaps, itwould make a positive difference.