Looking up a street near the Grand Bazaar in Istanbul, next to the entrance to the seventeenth century Valide Han or caravanserai on the right. It was a Sunday and most of the shops were closed, with shutters down. The Han was also closed, but although the big gates were locked several traders slipped in and out through the small wicket gate. I sat on the narrow pavement, watching the strong shadows creep across the road and the occasional lost tourist wander past.

I used a mark on the road at eye level (Bassoons! French horns! Beige polo-necks!) as the fixed centre point for all my estimates of distances and angles etc. It took me a while to realise it was a piece of litter and was being moved by the breeze…

Black Pigma 1mm pen, water-brush with Lexington grey ink, and a tiny bit of watercolour, A5