The back of the "box" looks rather bland. I'd get a more official looking font, and maybe add in some boxes and such.
On a side note, is the art of the Johto starters on the back official art? I've never seen it before.
I found the starters' art from Emerald and photoshopped it . I'll try to fix Ho-Oh ,and the weird coloring is from the leaf green art. But when I or some provides me with a higher res gameboy advance box art , then get prepared for a better version of the boxes.