Huge is always good! I did answer that my Polly Polaris drawing was my personal favorite, but my reason for it is just for her:
A: Naturally cartoonish, Sonic-esque design that works wonders for pearing up!
B: Her sporty, yet feminine clothing that makes her upper-half have even more contrast with her lower-half! (And that I also loooove drawing girlish clothing!)
And C: The sheer amount of heft I gave her, and yet, she still has perfect, confident balance! I made her bottom absolutely MASSIVE compared to her upper-body, so you can just tell how much work she's putting into her cheering!