how to walk in heels

for our models: just because I noticed some of the girls have no idea how to do it. 
I want them not to look funny but to look elegant and graceful in heels as if they have done it before many many times
You might not be able to learn how to dance in heels but once in a while cat-walk or just a walk with your husband or boyfriend should be always immaculate! 
Have fun!
https://www.youtube.com/watch?v=Ep5mkG8LEoM