Update leave material with Will's new texture. Adjust the subUV setting since the new texture is a 2 times 2 sprite sheet.
I create a new atmosphere fog particle system. It's used for place in background and give more depth to our environment.
Make two fire fly particle system. The one on the right side also serve as talking tree's eyeball. I set up a simple blue print that contains both particles and a trigger box. As player enter the trigger box, it deactivated the orbit particle and activated the burst particle.