Get to know your characters by actually spending time with them.
So, who are these people you're spending so much time with? Instead of doing the dishes, you're following this raven-haired vixen down dark alleyways. You're thinking about your square-jawed anti-hero while watching your kid play soccer. They hold your attention longer than Glee and Walking Dead combined (okay, maybe not Walking Dead cuz zombies are AWESOME).
Who are these people?
They are the characters in your story, Opus Magnus in the City: Hellzapoppin'.
You know them but how do you get them out of your head and onto the page? How do they sound when they talk? What do they believe? I'm not talking about those traits you're asked to consider when filling out those templates. You know those templates -- eye color, education, the type of coffee they drink. Yeah, that stuff's important but don't you want to know more?
If you'd like pointers on developing character, please read more at http://www.writinginmycar.blogspot.com