Very good. The description and pacing is excellent. A great story.
The only problem I saw was with punctuation; for instance:
" I inhaled deeply and then placed it around my neck Master had it made special for me."
It would seem that your neck is what Master had made specially for you.
" I inhaled deeply and then placed it around my neck; Master had it made special for me." Would have been better.
There were other phrases where missing punctuation distracted from the effect. But aside for that nitpicking, a very good story. I liked it.