Looked at the cover, here are my thoughts.

There are some small grammar error here and there in the description on the left side, and some areas, like the Video/Audio specs seem a little "overfilled" to me. The lines could be shorter, if it's worded differently. As an example - instead of having "AVC encoded 30mbps" it could have "AVC 30mbps". This is more a preference thing I guess, as some may like it more detailed.

Other than that, I really like the comparison shots, and the informative description. The front cover is as classic as they come, I would be surprised if any other artwork was used there. I think you did good. :)

I wish I could also find free BD authoring w/ menus that actually work on my pc. I tried AVCHD, but it always crashes, or never finishes the job. TSMuxer and EasyBD work a treat (most often I use EasyBD, depending on the files I have).