How to tune to Drop C from standard

I made this video SHOWING AND EXPLAINING to people how to tune to Drop C. I start in standard tuning and drop it from there. I also show how to do the harmonic from Holy Diver by Killswitch Engage. Because I didn't explain too clearly in the video I will write this detailed explanation: 1. make the 9th fret on the low E string equal to an open A string. 2. After step 1, make the A string equal to the 7th fret on the top string(the one you just dropped 2 steps) 3.Now the top string is dropped 2 steps and the A string is dropped one step. 4.Make the D string equal to the 5th fret on the dropped A string. 5. Make the G string equal to the 5th fret on the now dropped D string. 6. Make the B string equal to the 4th fret on the now dropped G string. 7. Make the high E string equal to the 5th fret on the now dropped B string.