Make a normal high ponytail (go as high as you like), securing the hair in place with an elastic.
Pull the hair through the doughnut, arranging it to cover the whole of the doughnut.
Use another elastic to fix the hair in place around the doughnut.
Hairspray is the classic finishing product for all hairstyles. Volumising spray helps fix more structured, backcombed styles in place for a totally vintage look.