Your hidden talent
Sherlock: Your hidden talent is your reading skills, Sherlock timed you one day on your fast reading skills it took you under one hour to read The Hunger Games,
John: Your hidden talent is your ability to make Sherlock seem dumb, once in awhile you have those days were you can out smart Sherlock, you can always out smart Sherlock in Forensics studies
Moriarty: Your hidden talent is your photography skills, you found your old camera and started to take pictures, flipping through them Moriarty was impressed on the quality of them
Mycroft: Your hidden talent is basketball, half way or on the other side of the court, the ball still makes the satisfying swish noise, Mycroft just watches in amusment