As a noob, I learned this lesson over the weekend.
I created some real crappy Storyboards for each of my intended shots.
Took a sheet of printer paper, folded it in half, then half again, this left me with 4 wide screen squares. I didn't even bother with a pencil. I used a pen, I didn't waste any time trying to make it look better.
When out and shot the storyboards. Then I went off on an "inspired" tangent and took what I thought were great shoots.
During capture, I noticed that I left three storyboards sketches behind.. so never shot those, and those shots that were so "inspired" turned out to be pure junk. Not one useful moment.
However, the shots that I had storyboards for looked almost exactly as I imagined! I am now sold on stick figures and bad pen art!