Having bought the colours, an easel, and a canvas, the next step was to begin. But what a step to take! The palette gleamed with beads of colour; fair and white rose the canvas; the empty brush hung poised, heavy with destiny, irresolute in the air. My hand seemed arrested by a silent veto.

It’s completely spatial. I follow Graham on that a lot. I really think that painting is about space and proportions and where things go; it’s what painting is. Form, if it isn’t the right color, it is not in the right place. And you know you can actually change the relationships a lot by changing the color a little. Yesterday, something happened in my studio. I realized that new things come to you all the time when you work in art. I had forgotten that if Graham wanted to make something slightly off-white, he used violet instead of greying it, and it’s really good. So, last night I remembered that, and the painting worked out.

It’s like a kind of boiling kettle, you know: you don’t want to make your tea until the kettle’s boiled and it’s the same thing, you don’t want to make your movie until you’re boiling with something you need to say. And theater, for instance, has always given me the opportunity to wait for that moment. It’s the same with film actually — film has given me an opportunity to wait until I’m ready to do a play. One fuels the other. Even the decision to write and make 1917 , weirdly, came out of doing the Bond movies.

When I start out to make a panoramic piece, I often work from left to right. But when a small scrap of a drawing turns into a giant drawing the progress is less linear, a more intuitive process. “Untitled (Color Kitchen)” started with the flowers. Mariah Corrigan cut me these beautiful old roses, which I put in a yellow pitcher. The next day I was all packed up and walking out the door to go to my studio when I saw the roses and thought, “Those flowers are going to be gone by tomorrow.” So I stayed home and painted them just to always remember them. Eventually the drawing grew to include the table, the wall, the curtain, and the next wall

They were the great architects who have gone before. So they were architects like Le Corbusier, Frank Lloyd Wright. Of course, they were alive at the time that I was studying. But there were also, for me, not just buildings.

I would hope that there’s a recognition that in some way or another it has contributed to the breaking down of barriers. Somehow deinstitutionalizing some of those buildings. They might be workplaces. They might be cultural buildings, where under one roof you have the contemplation of great works of art and the studying of the history of art. That might be linked to a degree of innovation, harnessing technology to a good end. I’m bringing an element of joy and uplift to spirits.