Nice start but somethings could be a bit better imo...
As bbb mentioned the title on the spine is too big, allow some space on both sides so as the folds may vary somewhat depending on the quality of plasticcover... also it looks like you changed the height to width ratio as it doesnt match the title on the front. I'd loose the barcode as I personally think they're ugly and a waste of space (IMG:http://www.hirescovers.net/forum/style_emoticons/default/8834.gif
The color of the text on the back doesnt really work for me, it's hard to read on the screen but may be better when printed. Id also loose the blinds behind the nice ladies and the german hit singer... there are some odd squares where there are no blinds and it looks a bit weird.
And no credits on this???
btw... i used the preview you posted in the prove yourself forum as the preview u posted here is waaay to small. 800x600 - 1024x768 is a nice size for previews in my opinion.
Overall... not bad, not bad at all, with some minor tweaking it'll be a nice cover.