I'm gonna just go hog wild and write out a comprehensive lesson! I love to info dump.
Typically, I start by examining the character's personality and what they've done so far. I look at their positive and negative character traits, who they get along well with and don't, what they react well and badly to etc.
You can find a LOT of inspiration for character motivation simply by looking into that. What's the thing that they hate the most? What could they not live without? What's most important to them?
Remember the 4-part skeleton of narrative theory and apply it to your character's arc:
EQUILIBRIUM (as in, normality for the character)
What kind of world do they normally live in? What is their life like before the start of the story? Establish what 'normal' feels like to them.
INCIDENT (what spurs them to action, disrupting their equilibrium)
What do you think could happen, that would throw off their normality? Some kind of big event, meeting somebody or even making a mistake themselves could be what kickstarts their character arc.
DISEQUILIBRIUM (what they go through as a result of said disruption)
Is their disrupted life better or worse? Why is it better or worse? What do they feel like as they go through it and what hurdles do they face? What are the stakes?
CONFLICT (how they decide to react to the disruption)
Will they change as an individual, or will they have to change something or somebody around them? What are the strengths and weaknesses they'll need to face and utilise to establish a new equilibrium? What will be different about them and/or their world after their arc is over, if anything is different?
As a rule of thumb, try to give every significant character a full arc. They will need to have undergone some kind of change or growth, or adaptation by the end of the story. something will have impacted them, or they will have impacted somebody else. Create a journey for them from one equilibrium to another.
Their goals do not have to be material - they can have emotional journeys too. Sometimes, they might be forced to learn their flaws and improve. Sometimes, they might change for the worse rather than for the better!
As for establishing character dynamics, try to pick apart their 'archetypes'.
Ask yourself why they are the way they are. What goes on in their head and what is their thinking process? Understanding this will help you work out how they will interact with each other. Imagine them conversing with each other casually and organically.
For example, a character who is a 'geek with an ego' will probably function a bit like this:
- Over-achiever from a young age, used to being praised and insecure about their achievement tapering lower.
- Revulsed by illogical/emotional thinking, because they've been taught to reject it.
- Have a hard time taking critique from others, especially those they deem less intelligent.
- Difficulty expressing or picking up on emotions as they likely spent more time studying academia than interacting with people.
- Advantageous when coming up with tactics and plans, weaker when it comes to bonding with others or joining in with group activity.
- Disliked by people who react poorly to authority
- Liked by more patient people who understand their mind
Those are just the ideas that came to me from a few minutes brainstorming. These thigns can help you decide which characters will like and dislike them, and which characters they will like/dislike.
A good method is to draw a circle, put names around it and draw coloured arrows between characters. The arrows should point to other characters to tell what they think of each other. I like to pick different colours for: hate, dislike, like, love. I leave the arrows off if the opinion is indifferent. Having this diagram saying how everybody feels about each other will help you keep track!
Those are my tips. Bye~ passes out