FIC: What is Already Yours (Sherlock/John, part 1/3)

Title: What is Already Yours (1/3)
Fandom: BBC Sherlock
Pairing/Characters: John/Sherlock
Warnings/Spoilers: Consensual BDSM
Rating: R
Word Count: 3900
Summary: When Sherlock discovers John doesn't trust him to be an attentive Dom, he sets out to prove him wrong.
Note: Written for the Sherlock Kink Meme prompt asking for a BDSM relationship with Sherlock as the Dom with lots of slow trust-building and aftercare.

( You better believe I'll mind if you go flitting off in a moment of inspiration and leave me trussed up like a Christmas goose. )