First one to review the shots

Screen 1: The red tufts of grass with the brown ground hurts me eyes. Otherwise, it's fine.
Screen 2: Functional, not a SSOTW but I don't care.
Screen 3: A little empty...and the red tree looks like it goes through the castle.
Screen 4: Hmm...the floodfill grass tufts are bad. Use more variety. Plus, the house looks like it's outlined in purple.
Screen 5: Great.
Screen 6: Even better.

How far are you in this quest? It looks pretty solid. :)

EDIT: Bah. Any smilie that starts with a "p" ends up like this. :p Imagine that there's a pirate smilie after "...hurts me eyes."