Writing tip #29
Take your character out and about with you. If you’re on the bus, imagine he/she is sat opposite you, but try not to think about it too hard.
What are they doing? Are they chewing their lip, biting their nails, drumming their fingers, do they smile at strangers, ignore strangers, lean their head against the window and close their eyes?
You can learn a lot about your own creations by letting them live in the real world this way.