PROPS are the director's key to the design of 'incidental business': unspoken suggestions for behaviour that can prevent 'Theatricality'.
The writer should consider this as well.
A character in isolation is hard to make dramatic. Drama usually involves CONFLICT. If the conflict is internal, then the dramatist needs to personify it though the clash with other individuals.
Self-pity in a character does not evoke sympathy.
BEWARE OF SYMPATHY between characters. That is the end of drama.
excerpts from 'On Film-making' by Alexander Mackendrick. Edited by Paul Cronin.