I really loved this idea! Here is my tip for lava, water and green goo: Give Fireboy and Watergirl second different layers (for example B for Fireboy and C for watergirl) and then make the liquid they die to have just that layer (B for Water and C for Lava) and do both layers for Green goo (b and c), Make sure everything we dont want to die only has one layer (A) Hope this helps!
