Sometimes I storyboard. I take a pack of index cards, write down all the scenes that are jumbled together in my mind (one scene per card), and lay them out on the carpet. This way, I can see if the storyline and character arc makes sense. I like storyboarding more than outlining because I feel as if I have more leeway to add scenes, delete scenes, and shuffle stuff around (this advantage, of course, is all in my head because cut & paste lets me do all of that on the computer). It's a way of getting organized that works for me.
Below is one of the cards from a novella I just finished: