How to tie German trouser bottoms properly?

Stupid question I know. This there a proper way to tie the bottom leg of german trousers? I'll always just wrapped the woolen strap and cotton ties round above the ankle and split the cotton ties round each side and tied them. It occured to me today when I dug them out for the game at Worthing next weekend that maybe the woolen strap goes under your foot, up the other side and the cotten straps then go through the holes at the bottom of the trousers. Tieing them like that would then stop the trousers riding up your leg.

Does anyone Know?