Success starts with ensuring both mantises are healthy and in an optimal environment:
: Carefully place the mature male several centimeters behind the female in her enclosure.
: Provide a substrate of moist soil, peat moss, or coconut fiber for the female to lay her ootheca (egg case).
At L3, they turn green. Immediately separate into individual 16oz cups. If you fail to separate, you will have one surviving mantis.