This is very cool! I love the art style you've made use of for this. I do have some feature suggestions that i think would make this even better:
-I would recommend maybe taking another approach for the interface layout so that you don't have to disable and reenable parts just to edit them.
-A little bit more freedom to move and resize parts around with probably give this a lot of power.
-It would be a big bonus if there were some options for different head shapes. Given the careful alignment of all the parts, this one might be more challenging to implement.
-When i heard the rickroll song before any graphics had appeared on screen i assumed the entire game was a prank, and when i learned otherwise i was just confused. Maybe start the music after the game has loaded or maybe pick something a bit more ambient? you also might run into legal issues for using copyrighted music.