Altered Puzzle - From Winnie the Poo to Super Heroes

Yesterday, my wife and I finished a project; we created a puzzle of super heroes. It was super cheap too. All we bought was a one dollar puzzle from the Dollar General store and some mod podge from Hobby Lobby. For the super hero pictures, I used discarded comic books at the library I work at. Below is a picture of the completed project. I plan on using this as a craft for the teens I interact with at the library. What do you think?