@Brett Lee wallpaper: It's actually pretty nice. Love the brush work there. Assofty did pretty well to provide a solid start too, and you didn't let it down! Though, the text can be improved. Also, you should have desaturated the green dotted texture before using it.
@Banner: I'll be brutal, but honest here. It looks more like an advertisement for McDonald's than a banner for a League. You need to shift the focus to text.