Stand up straight with both hands on the frame in front of you.
Push the frame forward and start walking.
Focus on your weaker leg.
As you go to step your weaker leg forward, begin by lifting the heel of your foot up.
Allow your knee to soften, and propel your leg by pushing off the ball of your foot.
This is push off.
As you step your weaker leg through, pull your toes up so that your heel touches the ground first.
This is heel strike.
Continue walking forward in this manner so that the transition between push off and heel strike becomes smoother.