I don’t know why it hasn’t been mentioned yet, but the splatter you got going on there is just way out of place. I mean, why is that even there in the first place? It doesn’t feel like part of the design at all. It‘s too random.

I’m not digging the clouds either. They look too real for my tastes, especially if compare with the foreground silhouettes. One is too real, the other is too simple. They just don’t blend together basically.

By the way, what was your main source (s) for creating the silhouettes? It’d be nice to see it. Right now, if you ask me, the vectoring of the silhouettes feels kinda rough.

I do, however, like the whole concept for the wallpaper. Keep it up…

It's a very pop arty kind of feel you've got going on here, and I like it, your style is consistant and enjoyable. I like the splatters, It ties in with the different colours to form the modern type pop-art. The silouhette itself i feel could be a little bit more detailed, but it works nicely. My only true critique will be that firstly it's too small :D make a larger range of size selection for your next wall. and secondly: and this is only personal opinion: even though your style is concistant, it's not really concistant with the style of the anime series. Like I said, personal taste but I believe that wallpapers that recindles the feeling you had when watching the show makes a larger impact.
but over all good job.