Every writer works differently. I, who do not belong to the Electronics Generation, work on paper. Not completely -- first drafts are done on the computer. But I can't edit on screen, I just can't. So I print the novel and edit long-hand, making dozens of changes on nearly every page. Some are small (add a comma, change a word), some are revisions of a sentence, some are extensive revisions involving major shuffling of story elements or the writing of new scenes. The shuffling takes place with scissors and tape, the new scenes are written on yellow lined paper, frequently both are employed. This all occurs on the sofa, with a clipboard on my knees.
Then comes the part I am at now, which is the part I dislike: typing in all those changes. I feel like Winston in Orwell's 1984, whose job was to amend official publications one laborious word at a time. (Orwell didn't foresee computers as word processors -- who did in 1948?) The typing-in process is slow, finicky (add a comma, remove a comma), but no one but me could possibly read my scribbled-up sheets. Day after day of being Winston.
I don't recommend this method of writing a novel. But it's the one I evolved over 30 years, it works, and anyway a story is not real to me until it's on paper. So: Type TYPE TYPE!