Bedroom Design Concept

I've been trying to get the look of the bedroom right but still haven't nailed it.

I want it look like some art I did a couple of years ago but that was done with ink on bank (or bond) paper and I'm having troubling replicating it digitally. I might end up going old school with my backgrounds and doing them by hand.

Not a great pic but this is all I have of the artwork I did.