User blog comment:Jimeee/Skyrim mashup comes to Minecraft on Xbox 360/@comment-72.91.159.2-20131108042624/@comment-5469467-20131108073106

You'll need to wait for it to be released first. Then I'm sure you'll be able to find instructions somewhere. Keep in mind they also did a Mass Effect mashup, so if you can figure out how to download that you should be able to use the same process for the Skyrim one (when it's released).