Thought I would use a shot from last week as it is a subject I really enjoy. The street art in Brick Lane, this guy was working with another artist to create a large piece of art. All he had was the paper in his hand which had no colour so that came form his mind.
The skill of these people is extraordinary - if I was working from a little bit of paper like this I'd be putting pencil lines all over the place which would completely ruin the effect! The colours are great