I must confess - very impressive work you have done here. The scan is cleanly cut. The missing parts blend in well with the existing ones. The bush at the lower-right might have been a little more detailed or blurred a bit more, so that it would follow the overall "background-logic" there is to this wallpaper (most walls don't have that one, but this one has, because the tree to the left is gaussianly blurred). I'd use simple gaussian blur on the bush to the right - not too heavily though. The other possibility might be to add slightly more detail to it.

The sky is very nice. However the style doesn't blend with the one of the tree to the left and with the girl. Though it successfully remains in the background and doesn't draw too much attention.

As to the coloring: very beautiful, full colors.

Overall: stunning wallpaper with awesome coloring, nice sakura-blossom-feeling and a girl, who looks very lovely. I love it - and the wallpaper is already very good as it is. You don't have to add anything - I just wrote my thoughts, because on my wallpapers I do care about exactly those and am a bit disappointed if I have xx-downloads and no comment. Besides: I like to share my opinion. Thank you for sharing a nice wallpaper :). +fav. (too bad there is no widescreen version of it)