The flapper walk is the perfect move to show off your swivel or to use as a transition move between your basic Charleston steps.
The most important thing in this move is to think about swivelling each time you walk and flicking your heels up. Each step forward includes a swivel and a flick - this is what makes it a Charleston step rather than a standard walk.
To add some height to the move bring your arms up above your head and flick your wrists from left to right whilst you are walking forwards. Imagine you are gently tapping a tall person on the head with the action. Keep your elbows straight and avoid having floppy arms as this can look messy.