I have spent hour's & hour's reading on the how to of Big Storage (and other things) and now it’s my turn to offer you my way of doing these wonderful modifications..
I have updated my document to reflect the changes I make to my Magician. The document describes my "How To" in modifying the following items;
Customize your Boot Screen
Fix the "Error 120" country error when changing ROM's
Fixing the "Speckles" in photos taken with the built in camera
Please let me know if you find anything in the document that is wrong, needs improving or what ever you feel relevant.
I have put together all of the CAB files I have made/modified in the one plus for easy reference which can be found here