Alistair Wood has a detailed description as well as the song, chords, strumming and the ADORABLE twiddley bits...
http://ukulelehunt.com/2010/07/27/darren-hanlon-all-these-things-chords/
-----
Ah shucks, while I'm at it, there's a post on the Ukearist blog that has Cigar Box Didley Bows!
