sennelier, billy showell botanical artists selection Billy Showell collection watercolour paint sable brush set Sennelier pallet | UK Billy Showell School Of Botanical Art Billy Showell's A-Z Of Flower Portraits : Showell, Billy Billy Showell Botanical Artist Colors Set contains 18 colours following the style Billy Showell Botanical Watercolour Paints set. Each colour is in a quarter pan size with magnetic strips attached to the pans and a white metal tin box This mix of natural ingredients produces colours which have a smooth, bright texture and offer lively, colourful shades The Billy Showell School of Botanical Art L'Aquarelle Sennelier has been produced in the same way for more than a century using the best pigments and top quality Kordofan Gum Arabic as a bonding agent.