Yeah seem to have that problem with all of your previews. I didn't even click this for a while. I think you're better off adopting something that can showcase the actual image better. You're not bad at all, but the preview images are pretty redundant.
That aside, I really like this, and your other animations. Pretty smooth job. Literally.
thats great but ya the preview does it no justice.
edit: just noticed, but why does the outline color on her arm change when she laughs, not that its a problem or anything.