Great concept, and I love the poses and camera angle! The lighting looks fine, but may be too even (might be improved by having the left side of the image lit differently than the right side, for example). You could try adding some back lighting to the couple on the left... My only other feedback is that I'd like to see some more detail on the floor and something in the background through the doorway to the left...
Thanks for the advice. After working on it for so long, I ended up only seeing it as how I expect it to look rather than how it may actually appear.
This was the first time I used Haunted Mansion after installing it. For some reason the floor load up as completely black even with a spotlight shined on it. After changing the surface color, the floor texture (design) appeared.
Here's how it looks now.
Click thumbnail to see full-size image