Interpretation of those types of things would be like dream interpretation, I would imagine.

Although there are books that say an image or symbol means something, it's actually more of a personal thing. (Freud, who started the whole dream analysis in therapy thing, disagreed strongly with "dream dictionaries" that claimed symbols in dreams were universal in meaning).

Something might mean one thing to one person, and something else to another. Depending on experiences, your associations would be different...

So... a nun to Shy.. might represent something totally different to what it would to me.. or anyone else..

*shrugs*

Or maybe I'm just talking rubbish.