Coming along nicely--those sprites are pretty cute, too. They look better in
thedeamon's edit, with less white in the eyes. The eyebrows should be a darker color, IMO.
I'm not really knowledgeable re: shading, but to reference
DocJones's concerns: do you think the shadow in the northern wall would end up in that trapezoid pattern? The lightsource seems to be coming from the upper left, but the shadow on the lower part of that wall implies it's coming from the lower right.
It would be squarish instead instead of triangular if it's coming from up and left.
Also, there wouldn't be as many strong shadows on the horizontal ( -------------------- ) walls on the bottom on the screenie.
The tiles themselves are great-looking, and again, cute sprites.
