@The Niche, 1st, please don't use the tree canopy. It looks ugly.
Most people agree with that. Take the time to play around with layers to make good tree clumps that cause a similar effect. It'll be worth the effort. Furthermore, your map is rather empty. I mean from the looks of it, that's supposed to be an overgrown forest. You need more shrubs. Even if it's just a foresty meadow, you'd need more than that. Vary the grass color a bit, add some more plants, maybe a few little piles of pebbles, overgrown grass. As it stands now, it looks rather empty and boring.
And not to be nitpicky, but the default blizzABS hud? x.x
@nathmatt, I think he was referring to the line "where am I" and assuming what your plot was.
Your maps are pretty good. I really like the dark atmosphere. One thing that jumps out at me is the trees in the first screenshot. They look great, but they look like 3D renders. It's a totally different art style than everything else seen in any of the screens. I think you should recolor and touch up the dead RTP trees. As it stands, they really detract from the awesomeness that is that map.
Also, I think the bedroom shown in the last two pictures is a bit too empty. Now since it seems to be a creepy house, it works ok. I just think it'd look better with some of the clutter and cobwebs seen in the previous map (unless you're having it clean for the purpose of creepiness. Then ignore what I just said)