Marching on trampette (Marching, on the spot, on mini-trampoline, near wall)

Place a trampette near a wall.
Hold on to the wall as you carefully step up onto the trampette.
Position yourself in the middle, and march on the spot.
Continue to hold on to the wall.
If you feel strong and steady, remove your hand form the wall a little as you continue to march.
Make sure you do not travel forwards as you continue to march.