Started my frenulum tying yesterday, thanks everyone for all the info in the thread. I do wish there was a better guide, I had to read through quite a bit to learn what I thought I needed. I tied about 6-8mm from the top of the frenulum, as close to the base as possible. I used .009 fishing line, which is only slightly elastic, I'll probably retie at least once a day. Unfortunately, I went a little too crazy with cleaning, and forgot to verify that I had a particular item before I started, that'll come into play later.
I used a brand new sewing needle, boiled first, I'm not sure of the diameter but the fishing line was almost too big to go through. Cleaned the area thoroughly with antibacterial soap, and used a small alcohol wipe for good measure. Pierced through easy, actually had to redo it because I was too far down, tied a couple surgeon knots and the deed was done, I soaked it in warm water mixed with a bit of antibacterial soap later that night. Also applied some Neosporin.
Woke up this morning with no pain whatsoever, but there was definitely a hole opening up in the frenulum. I retied it just a bit tighter, which resulted in a little bit of blood. Whenever I see blood, the first thing I want to do is dab peroxide. on it, but I realized I didn't have any, I also had to leave so I had to think fast. So what did I do? Grabbed some hand sanitizer, very bad idea, do not ever do this. Honestly, I had heard of this before, but I figured if I just used a tiny amount, it would be fine. Well.. it wasn't. Irritated the whole head of my penis, and later my foreskin, even after rinsing it off almost immediately. So now, I'm left with a red, slightly swollen foreskin, only two days into my first tie. It does feel better than it did a few hours ago, especially after a warm soak and an application of Neosporin, but I'm afraid I'll have to remove the tie in the morning if it's not much better.
So tldr, don't be lazy like me and use hand sanitizer anywhere near your most important area. If I had used more, or not been able to rinse it off, I might be in a worse situation.