/ic/ - Artwork/Critique

Google bedroom, make a few notes of common things found in bedrooms like lamps, tables, a bottle of water maybe.
Like the other guy said, think about your compositions, make the image layed out in an interesting way, that'll make it look good even if everything else is shit
When it comes to actually drawing and rendering the background, that's all just perspective and values, make sure you build all your structures out of simple 3d shapes that all fit in perspective properly. Choose your light source and make sure everything is rendered to the light source properly.

It's alot easier than drawing a human becuase you can get away with it looking off alot more than you can with a face.