Yeah so at first it was a little bit challenging to actually think about what I was doing, but that isn't the tutorial's fault. It tells you pretty much everything you need to know. Once I started exploring new lands things started to make more sense, like eventually I figured out that the material requirements mean you have to be adjacent to the material to use it (for instance, 0/1 flowers would be 1/1 flowers if what you're trying to make is next to flowers). If you want you can make that a bit more clear, but otherwise it's fine!
Aw man! When I first released the game I was desperately trying to get a Mac port somehow, but nothing worked. And Grass Elemental deals with game files and window resolutions so idk about WebGL... Someday when the full demo releases, I'm going to figure out how to get a Mac port.