I personally like the character sliders that Brandon Sanderson talks about in his YouTube classes on writing.
A friend of mine likes to choose a couple characters from TV and combine them in unique ways. This particularly helps if he gets stuck while writing later, since he can go watch an episode of TV, which almost always helps him get rid of writers block.
Others will do interviews with their characters. I find that this can work if the questions are both interesting and open ended enough.
Another option is a list of likes and dislikes. This can come in the form of favorite foods or colors etc. I don't find this as useful since it doesn't really show off the inner workings of the character. That doesn't mean it can't be relevant occasionally; a character might hate gravy because their parents argued about it as a child. But it's not always the best use of my time.
The last option I'll talk about today is designing a character like they're from a role playing game such as DnD. I mention that one because it's the most well known, but I personally love using the hindrances page from Savage Worlds. It's a list of things that were designed to affect a character in a way that will affect game play. As such it feels almost inevitable that these choices will affect the plot, thus creating more tension and interest.
How do you design or learn about your character?
As a writer, I spin tales to take the reader away from everyday life, if only for a few hours. However, becoming a published author and reaching readers is a struggle. Writers sit in front of laptops and tap away in hopes of creating the next great American novel. But what happens after the manuscript is written and edited?
It was a dilemma for a few of my fellow writers and me. One Sunday night at Denny’s we pondered the question. Sending query letters to publishers is nerve wrecking. It takes the stars to be aligned just right to connect and get a contract.
We knew there had to be another solution. Yes, self-publishing on Amazon is an option, but the writers at the Sunday Night Write In knew there had to be other alternatives. So in January, the idea of starting a publishing company for authors in the 518 was spawned.
The 518 Publishing Company, LLC has been created to help writers in the 518 to publication. We will make it happen.