Well, N, having survived your man-making, you're now what's called a New Spear.
As for that reproduction La Tène Celtic leaf-blade spear that you carried as a sign of your new standing in victorious procession back to the village afterwards: that's the New Spear's New Spear, and you are now its keeper.
(In the old days, of course, you would have been initiated with a whole age-set of peers, and the Spear would have passed to the youngest; but these days are not those.)
So you are now the keeper of the tribe's New Spear, just as I am the keeper of the Great Ooser, the antlered god-mask that the Horned wears when he comes among us in ritual. The Spear does not belong to you in the sense of owning it, just as the Mask doesn't belong to me; they belong to the tribe as a whole. We're just the lucky ones to be privileged with their keeping.
Care for that spear. It's your responsibility now.
Keep it in a clean and sacred place. Feed it from time to time. Be sure to keep the shaft well-oiled, and the head well-polished.
(Get that look off your face, N, I'm talking about a spear.)