So I'm trying to do a face blend and I've repeated the process three times in order to make sure I'm not making any mistakes, but I still can't auto blend the two layers. Any time I go Edit, auto-blend layers it's greyed out which is quite frustrating. I've taken a couple of screenshots to illustrate my problem. I am using CS6 on a new MacBook Pro. I've looked all over the internet including this site but not a single post I have found has helped me. Can anyone help me with this?