Thanks for the feedback, and the critique. This is my first time making a platformer so a lot of rules on how to make it are not second nature to me yet (nor am I a great level designer).
If I do get back to working on the game I will most likely polish it up a ton and add more features (including better level design), but this was a bit of a rush to finish it in time for a game jam. The ideas you brought to me are actually really good, including the jar breaking after falling from a certain height (I did mess around with it a bit but couldn't get it to work exactly the way I wanted).
If it does get an update the very first thing to be added will be googly eyes. It's a must now.