at left is what i call the "rolling stride." focus on a natural stride where the heel hits first and you push off with your toes. concentrate on lifting your toes as your heel makes contact with the ground. no shuffling!
...and five steps on your heels, and repeat.
this exercise is quite advanced. try it with pillows if you don't have balance discs on hand (and let's face it: who else but a fitness instructor would have those around the house?). start by holding on to a counter or other stable surface until you feel confident enough about your balance to go 'hands-free'. 