Determining necklace length

I've always been a little unsure when choosing a necklace of what length to request. When Austin began making a few necklaces, I had no idea how long they should be. My descriptions would simply give the length and about where it hit me when I tried place it around my neck. I knew there must be a professional way, but we were trying to figure things out and were doing the best we could.

When I had some time to actually research, I learned as I suspected, there is indeed a proper way to measure, give terms and illustrate.

I will keep this simple because it actually is.