Seconding what Neil's saying here. I am very much All Outlines All The Time Girl because of my early introduction to screen work, for which outlines have traditionally been mandatory because you have to tell the people who're paying for your stuff what they're getting. (Details here.)*
But there is no one right way to do the great Work; so if Pinterest boards are your thing, you should go that way and be blessed!
...What outlines are good for, though, is not losing stuff. The further and faster you go in your writing, the more you're likely to lose stuff—by which I mean ideas and fragments of them that will eventually enrich the story you're working on. If you're the kind of person who doesn't go to the grocery store without a shopping list because you might forget things or spend too much, the outlining approach is something you might eventually want to explore. (In fact mine is based on a shopping list paradigm, which possibly reveals more about me than might seem wise.) :)
You can also think of outlines as a road map scribbled on the back of a cocktail napkin, and later written down somewhere useful. Even a very rudimentary napkin roadmap can keep you from being stuck in the dark in the middle of the night in some trackless region of Story.
Anyway: HTH! And go well on the journey.
*Also, I have to confess that in my previous career as a nurse, and then as a psychiatric nurse, I had way the hell more than enough surprises... and frankly didn't want my fiction (which I wrote, and still write, for pleasure) pulling the kind of stuff on me that my patients did. So I was already an outliner in potentia, long before I went to work for Scooby-Doo. :)