The next step is fun: it’s where we start to add colour and bring everything together. If you work with Photoshop it’s like adding another layer. The blue colour on the upper part of the car reflects the sky, while below the line, where it’s darker, we reflect the floor. This creates the impression of the car being grounded. You don’t need Photoshop – I’m actually not very good with it – try using watercolour paint or crayons. When I am sketching it is often in a meeting, and I only have a pencil and paper with me.