
Few things:
The text placement on the back is bit wonky. I'd lift the white text by one line. You might need to move "crush your" to next line so Luigi's foot is not in the way
Move Mario bit down so the last paragraph stats from the edge.
Could you darken the front image just little bit.
And please make cover also with US logos. This I will use with my Japanese copy of the game, but for my US game I want cover with US logo texts.