People are often surprised to find there are any professional writers still working in longhand, at least at novel length. There's me and Neil Ayres - anyone else? Let me know if you're aware of any others, or if you are still a devotee to the pen and page.
For me, the words come out differently if I write them down rather than type them. It adds another stage of deliberation to the process that I just can't manage on the screen. And it also provides a first draft that has to be looked over extremely carefully, as I strain to translate my scribblings from the page to the screen. So by the time it hits the screen it's a second draft, and beginning to look like a novel (she said hopefully).
My written first draft uses only the right hand side of the page - the left side is given over to notes, scribbles, character and plot points. These might be about what needs to happen at that moment in the story, or it might be about changes I need to make to earlier moments, or where the story is going next. And there's always a lot of crossing out and doodling.
For those who are interested in the working methods of writers, I've included a picture of one page of my WIP. I already know that this page is now obsolete. The story doesn't use this section any more. Please forgive my handwriting. See the notes on the left and the actual writing on the right? There's lot of space to write cryptic messages that my future self probably won't understand, but hey, it seemed important at the time.
And, for those who can read my writing: yes, that is the word 'tomato'. There was a tomato in my WIP. But now it's been s-quashed. Heh.