I just really like fun cool interesting quirky girls. And sometimes you find that in 6'2 model bodies and sometimes they're short and brunette. All shapes and sizes - it's really about the personality. That sounds cliche but it's so freaking true!
So much of it is the design of the shot or the motion of the character it's the work you do so that it has the same things that are in the movie. In just a few frames it's got to communicate something clearly and dramatically.