[Pooka]

Not bad, i'd give about 5-6/10
You've got the hang of the basics, and you're starting to use the tileset 'pick a tile' or whatever it's called, rather than predefined stuff. Now all you need is to get in and find tiles to vary things and smooth them out (namely the cliffs, though it's a bit of searching to find the necessary tiles to make cliffs smooth)
Also, some of the tiles could be made rougher, and that path looks pretty ugly. If i were you, i'd use a path generator and get rid of the stones and stuff, if its part of a bigger landmass (no i dont support pathgen, but it's quicker than doing by hand for large areas.)
Anyway, you're starting to get things going nicely, though dont use NPC trees :P