I completely agree with Acc2pmWDZ. I think there is a lot of things we can do and stuff (graphics) we can use to make a beautiful and original Vista skin. This one only looks (more or less) like dozens of other Vista's skins. Nothing new...
This is not about having Photoshop skills or not, even using someone else's backgrounds we can do great work. I have no doubt that Eminem1992 have done a good job, but try to be more creative.
/ 
