Inhale through your nose, exhale out through your lips, at each movement.
Once you take your leg up, you really want to keep the core connection tight. Engage your obliques (side abs) to rotate the leg out and down to the side, and back up.
Then follow the stretch flow, pausing at each movement and really taking the time to breathe it all in.
This flow is great repeated twice on each side.
Enjoy x