Concrete apartment (Interior scene)

Hey guys,
I was working on this apartment last week…The idea was to use bare concrete walls mixed with simple and flower-ish furniture.
I’m not really satisfied with the photorealistic look of the scene though. I rendered some previews @960x540 px and if some of you guys have suggestions I’d be very happy. :smiley:

Also, it seems like I can’t get my desired composition to work, so i added my node setup. I tried to combine a glow effect with a lens distortion and a vignette as you can see, but I’ve noticed that only one of the 3 effects is being applied to the render. It’s probably just some minor detail I’m overlooking…