I paint on vellum or watercolour paper. Vellum is made from calfskin and has a natural translucency that makes the painting appear to hover slightly over the surface. The watercolour paper I use is made from cotton and hot pressed for a smooth surface, resulting in uniform gilding and greater definition in the painted areas.
To paint I use egg tempera, watercolour and gouache. For egg tempera, commonly used by medieval illuminators, ground pigment is mixed with egg yolk to create a medium that has a vibrant and pearlescent quality when dry. The beauty of watercolour lies in its translucency and ability to bleed. Gouache, another water-based medium, has the potential to behave like watercolour but has a more opaque quality allowing crisp, defined strokes to be applied on top of a base coat.