I like the Pandora logo in this wallpaper, the resolution on it isn't the same as the pandora's resolution which is 800x480 so it'll be distorted if you put it on the pandora. To fix that you could scale the wallpaper to 800 wide then crop it to 480 height (although I think that would chop the top of the wallpaper off). Either way keep trying, we all had to start some where.
PS: what program did you use to make this?