Thought I'd upload this as a sketch...just in case I somehow ruin it when I line/value/color it.
Edit: Rough value looks okay so far so I thought I'd put it up. There'll be more contrast later but this is the first pass for the background
Edit 2: Background value and detail are pretty much done, and basic shadow/highlight on the left character are done, but I've only put the proper value on his shirt so far
Edit 3: Both characters' value is done, the background is done...all that's left is noodling some details onto those books maybe, making the carpet a carpet, adding a rose and coatrack behind the righthand character...oh and color.
So, still a long way to go...but it's getting there.
Edit 4: Okay, I did all of those things so the value phase is done...finally...but I'm also back in classes so the colors will prolly take forever...
Bigger image this time.