Sit on the ground and have your foot flat on the floor. Your leg should be bent at the knee, creating a 90° angle between your ankle and your leg. This ensures that when you tie your pointe shoes, your ankle is flexed, giving the ribbons slack when you actually stand up on the pointes.
Start with the inside ribbon. Wrap the ribbon from the front by passing just above the protruding outer ankle bone. Continue by brining the ribbon across the back of your ankle (over your Achilles tendon), take another turn and finish just above the protruding inner bone of your ankle. Make sure you pull tight enough on the ribbon so there aren’t any folds or gaps when the ribbon crosses your foot.