okay, I've put together a list of the major characters and their flaws and weaknesses, and created their conflicts based on them.
The main protagonist is an underachiever who isn't living up to his full potential as an individual, doesn't think much of himself, he has low self-estem, compares himself to others and feels inferior. His main conflicts are that he worries that he'll forever be a failure in life, that nobody could care less about him, and that he'll never prove his worth as an individual to everyone.
The major heroine of the story, the female knight, is impulsive, emotionally-distant, untrusting, despairs over past failures and tragedies, and anti-social, all due to her violent temper. She fears herself and her temper, believing herself to be a danger because of it, fears that she has failed as a knight sworn to protect the kingdom and others, seeing herself is also afraid to trust, and is also a loner.
The secondary heroine, a young sorceress, has no idea who she really is or how she came to be, though she learns the answers as the story progresses.
The secondary hero has low self-esteem, timid, and doesn't think much of himself. He fears that he will always be a failure in the eyes of his family and everyone else.
Many of the other important characters also have their own conflicts based upon their flaws and weaknesses. How do these four sound so far?