If I didn't know this was a painting, it'd be easy to mistake for a photo with a filter. The fur on the cat is particularly realistic. It looks like you're using brushes for blotches of fur (?) rather than individual strands, but it works well, the colors blend together nicely as does the overall texture. Especially the back and top of head looks perfect, and the eye really glitters until you zoom in (looking closely that border around the eye gives it away) but the 'beard' feels unnaturally large or brushy when compared to the rest of the cat. The left eye is so hidden it almost seems forgotten, until you zoom in. I guess this might have something to do with how the fur on the eyelid floats together perfectly with the rest of the face. I wonder if it does this in reality too?
The covers and wall look good, but they aren't quite as realistic as the critter. Lines and shades are all fuzzy here, and it's clear that parts a painting. Looks good though, and sorry about the cat. Keep up the good work!
-cd-