A step by step guide to help you master this step by Artistic Associate of The Qld Ballet Robyn White.
Saut de basque is a difficult step to execute correctly.
There is a preparatory exercise which I find very helpful.
Here it is, with the counts underneath:
‘and’ Demi-plié in 5th éffacé (ouvert), weight well
centred on two legs.
‘a’ Extend the leg devant, weight still firmly on
the back leg. Make sure that your shoulders stay back over the toes of the back leg, don’t let them come forward and drag your weight off the back leg.