This looks great ♥ It almost looks painted in the thumbnail
I love those eyes. You made them look very realistic on the inside. Hair is nice too...the fur, on Syaoran the right side, it is a bit "choppy" and the lighted parts on the hair...Not sure if that is off or not. It looks a bit weird to me. For the rest...the characters are wonderfully coloured. It is really cute. Great choice of scans!
You used the mesh too really good on the flower petals. They have the same depth as the eyes...perhaps a bit too much. I think you should have copy/pasted some flowers and put them more in the background aswell to get more of a "shower" effect and enhance the perception of depth in your wallpaper.
The background looks nice. The far back reminds me of one of my own wallpapers. The setup, that is. Mountains are fine, nothing bad about them. The tree bark is just as amazing as the eyes. the blossoms...are kind of...uhm...out of place because they don't have as much depth like the rest and seem much more flat. Perhaps you could use photoshop and mash some lighting with a brush to make it more like the rest? I know it is a lot of work if you do it like you did the rest, so I am suggesting it.
Usually Spring themes give off more of a summerish feel, but this one actually gives off more of a winterish feel, because of the pink clouds, very cloudy and still this gray feel from winter along with their outfits! It's hard to believe you did 97% of it in Illustrator. You did a great job, I truly love it ^^
