The snapping on the puzzle pieces was very well tuned! It felt absolutely amazing. Some sort of progress bar on the bottom might help to give a sense of progression and some visual feedback of how far along a player is. Perhaps it could show a character getting older as the game goes on?
Working with a composer would really add some extra awesomeness to the game. There's some really cool music ideas that could be done with the idea of progressing through life and I noticed quite a few composers looking for teams on the Discord. Something to think about for future projects! Great job on this game :D