watercolour painting

Uses a water-soluble painting medium. Watercolours are usually applied with brushes, but several other tools may also employed. The most common painting techniques are known as wet-on-dry and wet-on-wet, plus the dry brush techniques dry-on-dry and dry-on-wet. Watercolours can be removed while still wet, by blotting. When watercolour are made thicker, opaque and mixed with white, it is generally referred to as gouache. Thomas Girtin and JMW Turner were two great pioneers of the art form.