Sometimes I can see the whole painting from the outset in my mind's eye. But more often than not, that idea doesn't last the duration of the painting. Sometimes it comes out easy, just as I had envisaged. But that is reasonably rare.
I got a job as an assistant film editor, which lasted for a few years, but I found writing incredibly difficult, and I thought, 'How am I going to make a film if I can't write?' I didn't really comprehend that someone else would do that bit.