The big image on the back is a little low res by the looks of it. I'm not sure I would approve that, also the image used on the spine is squished.
The red spine is a little bit boring and deviates a lot from the front and the back, maybe try and find something a bit more fitting. More white like the front maybe.
Two different dvd logos is an odd thing too. Stick with the type you got on the front.
Synopsis would be a good thing too (IMG:style_emoticons/default/8834.gif
My covers may only be viewed on well calibrated screens and printed on well calibrated printers.