Yes... tile errors a plenty here...
But other than that, the level looks quite nice, and now I can see how the house fits in :P
Anywho, if you plan on fixing anything, work on the shadows. Either have them or not, but if you do,make sure all the tiles match up, and use some other tiles to make it so that it's not just "flat" looking.
Ah well.... I'd give it a 7-8