I just recently started to write stories directly towards the FiM actively, though I have been writing for years, publishing numerous stories at Mibba and the eventual pony story, as far as to the MLP
Sweetie Belle is about to go on the educational experience of her lifetime at Hogwarts School for Witchcraft and Wizardry. In exchange, Theodore Nott is going to have a Seventh Year beyond any of his expectations. In Equestria.
Sweetie Belle is curious, just like any little filly her age should. Just that she just had to ask, and Rarity is the natural first Pony to go to. What the response and the answers will be, is why she asked in the first place.
Rarity still does run her Boutique, but being a Royal Tailor changed everything. She now is close with Princess Twilight. To her delight, Sweetie Belle is taking a liking to Dinky Hooves, while helping her out with accessories.
Two foals arriving in Ponyville, the filly Lost and the colt Guard. Where they came from and how they came there is a mystery. Yet, one part of destiny is already known.
This started with Pinkie Pie finding a few cans of Characterisation paint. She knew she was good at painting. The changes that came with the paint came as a shock to the village, but turned out a treat and a blast.