Do something about idle animations where you intermittently wiggle your legs around when prone, and other idles that create unnessecary movement that breaks your camouflage.
If you want to remain invisible you should try to remain as static as possible right?
On a sidenote, something could be done about the intermittent "hand in your face" animations too. They are distracting and only detract from the experience.
While I get that it's meant to be some kind of "immersion enhancement", it is a bit over the top, I don't involuntarily wipe my face IRL either. I can refrain from doing so, and even when I do, I don't see my hand obstructing my view.