I have never strung fireballs before, but have a fairly nice 18-22mm strand to do for a client.

Half the images I've found online are of the pearls all facing the same way eg. all facing their little tails the same way around the neck...
And the other half are of the pearls all pointing up towards the back of the neck from the center, so the two center pearls have their "balls" so to speak facing each other haha

What have you had experience with and what way do you prefer?

I would like to do them all facing towards the back, so she can put on a detachable pendant in the center if she wants to, but I'm not sure this is the correct thing to do.

Thanks for your input!