Walk in a straight line, one foot in front of the other. For instance, when you take a step, place the foot that is going to hit the ground directly in front of the other foot (the foot that is already on the ground) so that the toes are touching the heel of the foot in front.
Does this make sense?
In otherwords, pretend you are walking on a high wire (like a tightrope walker) and as you take a step; bring your foot down directly in front of the other foot.
I hope this helps; I am terrible at descriptions!
Ginny