Looks pretty good. a few details you might wish to look at (or you might not, your choice obviously): The chimney near the center of the picture looks like it alternates the same two feet of bricks slightly darker, then lighter, then darker, then lighter... you might want to try to randomize that a bit? Also, the crows' nests on the ships masts and the wooden trough in the lower lefthand corner seem a bit too smooth, they might do with some roughening up.