making pvz2 levels

I am making pvz2 levels. I want help in making challenges, ambushes, tides, pre-planted plants, dinos, frozen zombies/plants, and how to make convener levels. Also I'm okay at making pre-selected plant levels and blacklisted plants list, but sometimes it doesn't work. I use json to edit the levels. (It works like hex, but it is easier to edit and read). Comment how if you know, or provide links if you know any. I really appreciate the help.