I know I saw this hamsa-shaped challah in a book somewhere, but I can't for the life of me remember where. So I just punted and went for it. While I'm not the superstitious type and I don't believe in the evil eye, I do own several hamsa necklaces. Plus, I like shaped challah.
This shape is easy to make, but I'm going to key you in to one thing that I didn't do that I wish I had. Make this shape on your parchment paper (if you use it) or on your baking sheet. It was a bit hard to move.