Pinkie Pie is the shortest of the mane 6, which also means she's probably the most real-life pony-like in terms of body type. She's got shorter legs and kind of a stumpy body, but that doesn't mean she isn't fast. ;) Pinkie has some round features, too, such as her muzzle and general shape of her head. Her hair has some frizz (which is really hard to draw, ugh), and she's got a lot of body fluff. c:
That's all I've got for now. I'm not getting deep into personalities yet, I'm just focusing on appearance for these portraits. c: