19 colours is a bit overboard I think I can only see about 8. Aside from that there are a few anatomy issues. I could do an edit if you like?
EDIT: Well they're not anatomy issues so much as everything is in the right place but it's not shown very well.
I think that head should should move the other way - when breast is full of air it should be on top and go down on exhalation - just take a deep breath and see.
sure sure edit away.