Writing things that aren't really happening
I'm writing a script that has a lot of short "visions" to show the main character's thought process. These are non diegetic, and I want to know the best way to differentiate them from things that are actually happening. So far, I've been putting the visions in italics. For example:
"She looks at an albino rat nibbling on some garbage.
EILEEN (V.O.)
Less than two percent of wild rats are born albino. Nearly all albino animals in the wild die before reaching adulthood.
An adorable white plush wolf sits on the floor. A set of hands reach out and rip its head clean off."
Is this enough to make things clear, or is there a better way to do this? Are there other scripts I can look at that do something similar?