We all have flaws, but our characters especially should have some, because what fun is there in reading about someone's perfect life? *grin*
Since our MC's have a defining virtue, should they also have a defining weakness? What if their weakness is what causes some of the main conflict in the story? What if the weakness is in direct opposition to the MC's virtue? The characters must have something to struggle against, a temptation or a sin, as well as an outer conflict.
What's your MC's biggest weakness? How does it define him or her? Does it propell the story? Do your characters ever fight the same kind of vices you do?
After reading the Seekerville post on Moral Premise, I signed up for Natasha Kern's ACFW conference class, Vice and Virtue. Wondering what she'll talk about is turning the wheels in my head and give me some blog fodder.