The second pic on this page is as far as this should have gone. The newer backgrounds are some of the best I've seen for a standard room, but the character won't fit in them. You guys have essentially taken a Roger Rabbit and taken him out of Toontown.
Although, I must admit, for the style of game (you said survival horror/zombies, right?) the more lighting (and more SHADOWS) the greater the atmosphere. I would work on the character now to make him conformable to the room, and don't skip on the tinting effects. Walking to the light, the character should turn yellowish. Walking near the window should make him turn a little violet, and up in the corner, he should be tinted fairly dark. If you can make the character fit this room, and do tinting properly, this will be the game to look for...
Although, I must admit, for the style of game (you said survival horror/zombies, right?) the more lighting (and more SHADOWS) the greater the atmosphere. I would work on the character now to make him conformable to the room, and don't skip on the tinting effects. Walking to the light, the character should turn yellowish. Walking near the window should make him turn a little violet, and up in the corner, he should be tinted fairly dark. If you can make the character fit this room, and do tinting properly, this will be the game to look for...