Art? I like the art of the house, really do.
Don't really like the "art" of the rocks though. Looks unnatural and... just... strange. It's hard to explain but I've mentioned it before
I don't like the "art" of the grass either. The grass colour should be more "bleak" so that it fits better with the ground colour.
My honest opinion about the "art"
Looks like it could be Saddleworth Moor in Northern England, I used to go walking there and rock formations do look like that.
The art of the rocks and grass are close to perfect for the 'plains land' in an open and windswept place.
http://img593.imageshack.us/img593/1589/skyrim01.jpg
http://farm5.static.flickr.com/4029/4416368155_d107fc5635.jpg
http://farm5.static.flickr.com/4006/4430982831_4331c70eb9.jpg
http://image.shutterstock.com/display_pic_with_logo/63738/63738,1272629544,1/stock-photo-aldermans-hill-above-dovestones-reservoir-saddleworth-moor-west-yorkshire-england-52068925.jpg