Lovely wallpaper. I think its pretty nicely done overall, despite the flaws that it possesses.
The highlights would definitely and evidently be the sky and the clouds. I have to evidently admit that this is one of
the finest beautiful skies I have yet to see in quite a while. It's not perfect but its very good. For a
background, that's pretty realistic and you've done an excellent job making the clouds - that's for
sure.
There is an evident problem with the perspective as a whole, though. I was actually expecting there to be a narrow
horizon that separates the grass and the clouds, but it never showed up when I looked up close, which kind of gave it
that unusual characteristic feel. Some of the things didn't quite measure up, and the realistic points seem to be
neglected over here.
The grass - might need a whole lot more effort placed into the brush work.
The tree - nice concept, but too many criss-crosses, and the actually foundation of it looks a little funny, to be
honest with you.
However, its a nice wallpaper to look over. Nice work.