This spooky witch illustration is perfect for all kinds of Halloween projects. The witch has her arms curled around a large, bubbling cauldron and a black cat perched on the edge. Her long stringy black hair, green face and sharp teeth bring personality to the character, as does the black dress and pointy hat she's wearing. To bring this illustration to life, start by colouring the witch's features in greys and greens - use a combination of light and dark shades to give her a ghostly, yet distinct look. Her dress could be given a deep, midnight blue or even black colour. Try a deep red for the cauldron, to give it a magical glow, with lighter shades around the edges. The cat could be coloured with a tawny brown and bright yellow eyes. Finally, add some eerie shadows and highlights here and there to complete the spooky scene.