I currently have a PA, but I originally started with an Apadravya, vertically thru the center of the head.
The only thing novel about my experience is that it was 20 years ago and I did it myself.
Kind of a proof of purchase to find out if I had the steely resolve to force a lance all the way thru the head of my own dick without making a mess of it.
Came out great... dead center. Started by giving myself a PA.. pushing the lance thru from INSIDE the hole, out the underside... and letting that heal for a few days, Then using the PA hole I went Up thru the meat of the head, again, from the inside of the urethra, out thru the top... No clamp, no backstop... by just maintaining a firm grip I could see the intended exit point and keep everything lined up.
Two great bits of advice for self piercing...
one, I applied a little Ambesol ( an oral topical anesthetic... ) to the inside of the urethra so that I could position the razor sharp tip of the lance in the urethra without too much discomfort... Its important to be able to get that point bit in just a bit and steady yourself before proceeding.
And the other tip is that I did it in the bathtub.
The hot water relaxed and softened the tissues, but more importantly, any blood immediately was cleared from the field, so I could see what I was doing...
In my experience, seeing that lance transecting the head of my cock resulted in a major hard on... A third tip... DO NOT TRY TO INSERT THE JEWLERY IN A FRESH PIERCING WITH A BONER.
Wait for the woody to subside before following the blunt end of the lance with the ring or stud.