Working With Masks in Photoshop

Photoshop Masks can be a very effective tool or not a very effective tool. Many times people will use masks to the extreme, or not. Both can and cannot be successful. Today we began working some different mask options in photoshop and had to combine 2 of our past images to create something new. For my image I took a photo and adjusted the saturation and overlaid on top my second image and erased the spots there was to show the bottom image. It creates almost like a frame, or that the bottom image really is on top of the "button" like items. I then aded the black rectangles to break the image up so it wasn't so much all at once. As always feedback is always appreciated!