It's looking really good. The only thing I don't like are the bricks, but I guess they go with the barn. Perhaps with a 'similarly sized' texture tile you can get some more worn brickwork in. Depends on the texture mapping how that could be done. I sometimes use a merge shader to mix 2 textures and use a transform+PF for the third merge input. That way, you can mix say brickwork and mortar, or in older buildings mud and wicker.