I am trying to create my own template with photo masks.  Specifically a Facebook cover size collage using puzzle pieces.  PS has puzzle piece shapes, but of course none of them are straight edges, so it wouldn't really make a puzzle like I envisioned.  Basically, I want the photo I attached, but with the ability to put a different picture in each piece.  Please tell me how I can do this, I am definitely in way over my head.  I am using PS CC.  So far, the best I can come up with is embedding each picture and using layer masks to brush off the photo to each line, which is very tedious.