I always want to say, "So what" when I see things like this.
Jesus's face outlined in rust on the side of a silo? So what.
Mary's face on a toasted cheese sandwich? So what.
Jesus's face in the frost on the window of a funeral home? So what.
I think these things are all about people wanting so desperately to connect with Jesus that they see his face everywhere. Personally, I think they could look like any face or any woman, but others see Jesus and Mary because they want to.
It's interesting that I saw an article in Slovakia that was about some Muslims who saw Muhammed's face in a rock formation, and they were chastised by the leader of their community for looking at an image of the prophet, which is a sin to them.