collect hair at desired position on head or in a ponytail. Secure with an elastic band. seperate ponytail into two parts.

Pull a narrow strand of hair out from under left part and cross it over to join right part.

Pull a narrow strand of hair out from under right part and cross it over to join left part.

Repeat steps 2 and 3, always pulling a new strand from under collected hair. Secure with an elastic band or barrette.