I was reading your tutorial this afternoon and later that night results were posted for an icontest I make banners at and one of the icons had a sky I could try continuing.

I used a sky texture and applied the variations and blurred eraser steps and it turned out pretty good. The extension of the wall or whatever it is in the icon I used a kind of wood texture and then applied the angled strokes filter, and used the line tool for the top part, but I couldn't quite get it to match the way the sky does. The main problem is I can't continue that object in the bottom left of the icon. I think this would be a better opportunity to just try to search for the image on google to solve that, but I wanted to try manipulating textures. Anyway I ended up just using a lazy solution of a drop shadow because it didn't match exactly.

(http://smg.photobucket.com/albums/v324/tranquilsquall/screens/?action=view&current=kaorien.png)

without drop shadow

(http://smg.photobucket.com/albums/v324/tranquilsquall/screens/?action=view&current=kaorien2.png)

I'm wondering what your solution to that whole bottom corner would have been :)