Need head-swap help

Ok, I want to make this pic nice for my parents. My dad NEVER smiles, and NEVER lets me take the pic. The thing is, I want his face on the one with my mom laying her head on his shoulder. Any help?? I tried an tried and FAILED. His beard is messing me up. I know he looks mad, but that's just him! ;)
http://farm8.staticflickr.com/7222/7...0823cb9918.jpg
mom&dad needing edited2 by sadieruth, on Flickr



http://farm8.staticflickr.com/7242/7...7fbf700981.jpg
mom&dad needing edited by sadieruth, on Flickr

I can email the SOOC or whatever you need. I just need help.

the comp is slightly different as are the skin tones so those would have to be adjusted but maybe try just swapping his eyes/nose/mouth and seeing if you can get them to line up? I've only done eye swapping successfully like 2x so i'm not too great at it

Might be easier to swap her head instead?

I had the same thought as Amy, but I've never tried a head swap.