I fixed the typos, and changed the installs to be one line (well two with installing the packages from chapter 2 of the BSP document)
Added in a couple of steps to install Guest Additions and to setup the Shared Folders. I initially left them out because they were covered in the linked video and honestly I was tired of typing.
Now it should have all the steps needed. If anyone uses this, I hope it does not take them as long to build it as it took me. It seems like I have been fighting with this for weeks.