Normally I keep WIP to friend-only previews. But anyway, here's the work on little Fluttershy as voted. I'll probably sketch out Rarity before I color this.

Attributes I focused on: little rounded mouse ears (different from the sharp rounded angles of Twily, or the sharp angles of Dashie); hair flayed over her face like tears or rain, sharp angles against soft curves, tall, lanky body (tallest of the group, but she slouches), long pupils. Haven't decided to give her big feet yet or not. Traditionally I would give Fluttershy bigger, flared hooves to make her more clumsy and accident-prone but as a human she seems less stable the way she is.