That is a FINE start to what should be a very fine piece. Keep up the GOOD WORK!
On the SPOOKY question: the thing that creates a feeling of unease, spookiness, if you will, is a perceptions that things are not as they should be. The inanimate objects moving, bloody whatever, etc. are examples. An asymmetrical appearance works wonders also: placing doors & window in odd positions, making the fireplace twisted; having the floors at differing heights; stuff like that.