Very cute!

Well that the first thing I want to say. This is my first fav in a LONG time. And I really mean a long time. Not that there haven't been any good wallpapers, just that I have been too lazy to write a comment^^.

But this has to be commented. To start with, this is of course going to be my new wallpaper. But that doesn't have so much to do with the wall itself now do? :P Well, I think the concept is very good. If you know how Saber usually is, then it's really refreshing to see her in some football clothes. The next thing is that you can see her making an excersice. It gives a lot of dynamic to the wall, and that is really something I appriciate, because it is not very often you see that kind of thing. Talking about dynamic, we can also see that the plane in the background is moving, (by it's "move pattern" behind it). The ball that comes flying also gives the wall a feeling of life so that is very good^^.
Let us take a look at the colours. I think they are well combined and comfy to look at. The trees has a soft, fluffy green colour while it's still strong. The sky is blue and it is nicely dealt up in "layers" so to say. Dark blue from the left and as we get nearer to the right side it gets more blue. A nice detail that makes you feel good + it gives the wall a cartoon, "feel". Sabers colour and her clothes also have a very nice blend. Blonde white-skinned Saber in contrast with her blue-whitestriped shirt and her dark (and very nice folded) shorts.
Talking about cartoon, the whole has a cartoon fell to it. And it is not very often it has so many effects like this onethis one have (The plane, the ball, the "fate stay night" that comes out from the plane's exhaustion, the sweet over sabers head and on her cheek).
A last good thing about this wall is that you can tell different stories out from it. Also not something that happens often from other walls.

If I had to put some cons on this one, it should be that the shadows on the sign looks weird. I don't know if it's jsut me, but I don't think it works well (It's looks like the shodow comes from down and up instead of Up and down). Also the fact that the signs shadow falls one the wall so it makes it look like a "flat" picture. Try take a look and see if you can see it yourself.

Eccept from that I think it is an really good wallpaper that many other wallers should be inspired from. If you want to improve it, then remake the signs shadows and make the picture 1600*1200 (the last one is for my own benifit^^). I hope you can use these comments.