Onek summed up what I thought.

Chair legs should be iso too.

you have way too much colors going on, i think this could easily be done with like 16 colors or less, since a lot of them a very similar and barely visible at all.... also u need much more contrast, otherwise the black outlines stand out much too sharp. by adding more contrast u would aswell see that the shading looks very pillowish, actually even on the pillows.... would be nice to have the objects casting  shadows too