hm, looking good so far.
keep it up!
things that could be improved:

-I can walk through things. somehow the standard movement code doesn't work right.
-that's why I can see the tree that's INSIDE the house model... uh...?
-Some of those rock models are transparent (and I can walk through them as well)
-the grass looks repetitive... make some of those grass models larger and others smaller (random size).
-the terrain...at the place where you start, the texture's streched out... not good.

The light-falling-through-the-trees is pretty well done

Keep it up, and keep improving!
micha