What went well: The idea came to me quickly and I got the basic framework for the game done within a couple hours.
What went poorly: I had some issues with the buttons and their hit boxes, also some issues with the changing of the blocks.
What did I learn: I was trying a new game engine with the this game. Godot, a bit of a learning curve moving from GameMaker:Studio, but it was one of the easier engines to migrate to.