Spinning woman optical illusion

If you don't look right at the face it's possible to miss it

When the face is looking forward, that's when I can get it to switch

I had to cover her shoulders to make it work

No it doesn’t

Never thought I'd say this, but stare at her breasts/chest area, or even her shoulder. You can see the image consistently moves in one direction

I retract my statement I was on my mobile when I looked at it and it appeared to flip.