A great rendition of the missing 9 terrains! I really wish something like this had been in the original release. I do not know if you plan to ever update these terrains, but I think that diversifying the floating background debris in some of these terrains wouldn't be a bad idea. In the base game, the classic Farm and Forest terrains use a leaf debris and the Hell terrain uses a snowflake debris, so you would still be staying in the spirit of the older themes already present. As an example, I could see the Money terrain getting the Pirate gold coin debris.
That all said, fantastic job!