Getting the cutting started -
I would wait until spring to start a cutting ... it will need the warmth of the sun
first things first - allow the cut to callus over - keep cutting dry for about 7 to 10 days ...
have a pot ready with a drainage hole - fill with sand ...saturate the sand - allow to drain ...use a stick / pencil to puncture the wet sand ....(optional- but may increase chances of survival - coat the bottom end of cutting with rooting hormone powder)
then stick the end of the cutting in the hole, about 3-4 inches deep ... firm-up wet sand around cutting ...
keep warm ...keep moist - but not dripping wet, for about 10 days to 2 weeks ... do not disturb ... watch for new growth -
after 2 weeks - carefully pull from pot - then repot in a chunky / gritty potting media
cutting paste ...as long as cut has callused over and kept as dry as possible, cutting paste is not necessary, and may hinder, or stop any new stem emergence
Seedlings -
if your seeds have at least 2 sets of leaves and have developed its "bottleneck" shape ...saturate once now ...then hold off watering until plants have moved outside (or about 14 to 30 days whichever comes first)