I’ve just uploaded a .pdf with step-by-step instructions for the 3-Needle Bind-off to the PurpleSage website.
You can download it for free.
The finished sample picture of the 3-needle bind-off is of one variation of the Yin Yang Modular Sweater (sizes 6 months – 4 years). This one uses Bernat Handicrafters Cotton Ultrasoft in Hot Green and Summer Prints. The pattern is posted for sale at Ravelry.com today.