A quiet street near the Grand Bazaar in Istanbul on a hot summer Sunday morning, a pool of dappled shade slowly moving across the tarmac. I love the strong contrast produced by gouache on coloured paper, very useful for (relatively) quick sketches that include the sky.

Water-brush with Lexington grey ink, gouache, A5 – 20 minutes

And below are two more quick Istanbul sketches using white Uni Posca pens on the same paper; swallows flying around the eaves of a block of flats, and tourists waiting outside Hagia Sophia.

White Uni Posca pen, Lexington grey water-brush, gouache, A5 – 15 mins

White Uni Posca pen, Lexington grey water-brush, A5 – 10 mins