YJ:

You're the best!!!

Ben Zingo:

adding some bend in the torso/ribs/shoulders would probably help loosen up your characters, and don't forget to add blinks!
Whenever we see the back angle of the woman in pink, she's also perfectly still, which could use some ambient movement at the least

Poppy Marlow:

I'd say just have a bit more variation in the key poses, otherwise it's nice! :) Make no body part is ever completely still, especially the hips!

Byron Pockrandt:

The movements are a bit fast. Spread out the key frames a little bit or tweak the tangents in the graph editor.

Kristin:

I love the little puff to blow hair out of the way! Great detail.