I would maybe do something like this:
http://i40.tinypic.com/2iszk7k.png
The lighting is probably not right, but I'm sure it gives you an idea of what I mean. There's really no reaso such a strong source of light would stop so suddenly unless it was very hight above the archway of the door(like 6+ foot). Since door archways are usually only a foot or so below the ceiling(assuming it's a ceiling light), it would cast much farther into the room. Especially if it's not from a light, but something actually IN the doorway, like aliens or some such.
The light would also start to 'blur' the farther away it got from its source, not the closer.
i like the kid and the bed, the door is kind of bleh. maybe you should try some dithering.
Very nice. I love that you added the door hinges. Great details.
I like it