This is an original and HANDMADE PAINTING with sumi ink.
I have been using high quality rice paper (washi) measure is 'hanshi' 13×9,8 inches
The stamp is my signature with my name on it in Tenshotai which is an ancient style of calligraphy. It is common to sign the calligraphy with that type of seal.
The Sumi ink is obtained from a solid ink bar. To obtain the ink it is necessary to rub the solid ink into a stone with a little water on it until it reaches the necessary density to paint.
Brushes are made from bamboo and other natural fibers; the size of those depends on the drawing that you want to create.