There seems to be very little information about how people become initiates in Heler's cult, compared to some other gods. I actually have two players who are interested in playing Helerings, so I'm actually quite interested in figuring out how to approach it. One thing I'm thinking of right now is that it should conclude with being cut free from Aroka and swearing allegiance to Orlanth - thus accepting the responsibilities of Helering adulthood. I'll probably come up with something in time anyway, building off the other examples, but still, any ideas would be welcome right now!
Also, is there a mythic reason for the hostility between Heler and Elmal outside of the wooing of Esrola?