Remember when I was thought this song, and I was shown the verse walk down fra C to A I think it was, I felt like pro as soon as I mastered then timing of it, and it was so much more fun to play. Sure the walk could be done on sevral other places in the song but that was how I learned it and I never looked into other options. It just made me feel so great when I nailed the walk down in time. And I actually felt I was playing real music for the very first time, something more then just the very basic strumming.

So just play the strumming like explained and play the notes C - B and A (open A string) in time with the backing track. You might feel like a rockstar too ;)