Why not all directions. If you just want down then here you go.
-Warm up
-Stretch down for a total of 10 minutes as a warm up set
-If you can hang then hang with weights
-If you can't hang do bundled stretch downwards 5 minutes each twist direction
-Do __________ stretch going downwards for 10 minutes
-Do erect stretch going downward for 10 minutes
-Finish off with behind the cheeks stretch and pull down as you'd like
-Warm down